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2031123133 = 131132276091
BaseRepresentation
bin111100100010000…
…0111101010111101
312020112220202010201
41321010013222331
513124431420013
6533314003501
7101222155534
oct17104075275
95215822121
102031123133
11952574966
12488276591
13264a53610
14153a7b31b
15bd4ae3dd
hex79107abd

2031123133 has 16 divisors (see below), whose sum is σ = 2216805696. Its totient is φ = 1849800960.

The previous prime is 2031123121. The next prime is 2031123139. The reversal of 2031123133 is 3313211302.

It is not a de Polignac number, because 2031123133 - 213 = 2031114941 is a prime.

It is a super-2 number, since 2×20311231332 = 8250922362815471378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031123133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031123139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330418 + ... + 336508.

It is an arithmetic number, because the mean of its divisors is an integer number (138550356).

Almost surely, 22031123133 is an apocalyptic number.

It is an amenable number.

2031123133 is a deficient number, since it is larger than the sum of its proper divisors (185682563).

2031123133 is a wasteful number, since it uses less digits than its factorization.

2031123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2031123133 is about 45067.9834583266. The cubic root of 2031123133 is about 1266.4228877659.

Adding to 2031123133 its reverse (3313211302), we get a palindrome (5344334435).

The spelling of 2031123133 in words is "two billion, thirty-one million, one hundred twenty-three thousand, one hundred thirty-three".

Divisors: 1 13 113 227 1469 2951 6091 25651 79183 333463 688283 1382657 8947679 17974541 156240241 2031123133