12520133031 has 24 divisors (see below), whose sum is σ = 19425775104. Its totient is φ = 7151859120.

The previous prime is 12520133027. The next prime is 12520133033. The reversal of 12520133031 is 13033102521.

It is not a de Polignac number, because 12520133031 - 2² = 12520133027 is a prime.

It is a super-2 number, since 2×12520133031² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 12520132989 and 12520133007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520133033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457546 + ... + 484136.

It is an arithmetic number, because the mean of its divisors is an integer number (809407296).

Almost surely, 2^12520133031 is an apocalyptic number.

12520133031 is a deficient number, since it is larger than the sum of its proper divisors (6905642073).

12520133031 is a wasteful number, since it uses less digits than its factorization.

12520133031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29811 (or 29804 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 12520133031 its reverse (13033102521), we get a palindrome (25553235552).

The spelling of 12520133031 in words is "twelve billion, five hundred twenty million, one hundred thirty-three thousand, thirty-one".