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2031252231 = 36171097381
BaseRepresentation
bin111100100010010…
…0111001100000111
312020120011022020010
41321010213030013
513130000032411
6533320441303
7101223234111
oct17104471407
95216138203
102031252231
11952652958
12488319233
13264a9a2c8
14153ab23b1
15bd4d77a6
hex79127307

2031252231 has 8 divisors (see below), whose sum is σ = 2712728304. Its totient is φ = 1351972160.

The previous prime is 2031252211. The next prime is 2031252241. The reversal of 2031252231 is 1322521302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2031252231 - 222 = 2027057927 is a prime.

It is a super-2 number, since 2×20312522312 = 8251971251884954722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2031252198 and 2031252207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031252211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546840 + ... + 550541.

It is an arithmetic number, because the mean of its divisors is an integer number (339091038).

Almost surely, 22031252231 is an apocalyptic number.

2031252231 is a deficient number, since it is larger than the sum of its proper divisors (681476073).

2031252231 is a wasteful number, since it uses less digits than its factorization.

2031252231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098001.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2031252231 is about 45069.4156940158. The cubic root of 2031252231 is about 1266.4497184384.

Adding to 2031252231 its reverse (1322521302), we get a palindrome (3353773533).

The spelling of 2031252231 in words is "two billion, thirty-one million, two hundred fifty-two thousand, two hundred thirty-one".

Divisors: 1 3 617 1851 1097381 3292143 677084077 2031252231