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2031251012 = 227193722789
BaseRepresentation
bin111100100010010…
…0110111001000100
312020120011020112222
41321010212321010
513130000013022
6533320431512
7101223230420
oct17104467104
95216136488
102031251012
11952651a4a
12488318598
13264a9989b
14153ab1b80
15bd4d7242
hex79126e44

2031251012 has 72 divisors (see below), whose sum is σ = 4396593600. Its totient is φ = 802141056.

The previous prime is 2031250981. The next prime is 2031251021. The reversal of 2031251012 is 2101521302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 726914 + ... + 729702.

It is an arithmetic number, because the mean of its divisors is an integer number (61063800).

Almost surely, 22031251012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2031251012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2198296800).

2031251012 is an abundant number, since it is smaller than the sum of its proper divisors (2365342588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2031251012 is a wasteful number, since it uses less digits than its factorization.

2031251012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893 (or 2854 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2031251012 is about 45069.4021704304. The cubic root of 2031251012 is about 1266.4494650967.

Adding to 2031251012 its reverse (2101521302), we get a palindrome (4132772314).

The spelling of 2031251012 in words is "two billion, thirty-one million, two hundred fifty-one thousand, twelve".

Divisors: 1 2 4 7 14 19 28 37 38 74 76 133 148 259 266 518 532 703 1036 1369 1406 2738 2789 2812 4921 5476 5578 9583 9842 11156 19166 19523 19684 26011 38332 39046 52022 52991 78092 103193 104044 105982 182077 206386 211964 364154 370937 412772 722351 728308 741874 1444702 1483748 1960667 2889404 3818141 3921334 7636282 7842668 13724669 15272564 26726987 27449338 53453974 54898676 72544679 106907948 145089358 290178716 507812753 1015625506 2031251012