12520533031 has 4 divisors (see below), whose sum is σ = 13257034992. Its totient is φ = 11784031072.

The previous prime is 12520532951. The next prime is 12520533043. The reversal of 12520533031 is 13033502521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12520533031 - 2¹³ = 12520524839 is a prime.

It is a super-2 number, since 2×12520533031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12520532987 and 12520533005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520533061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368250955 + ... + 368250988.

It is an arithmetic number, because the mean of its divisors is an integer number (3314258748).

Almost surely, 2^12520533031 is an apocalyptic number.

12520533031 is a deficient number, since it is larger than the sum of its proper divisors (736501961).

12520533031 is an equidigital number, since it uses as much as digits as its factorization.

12520533031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736501960.

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 12520533031 in words is "twelve billion, five hundred twenty million, five hundred thirty-three thousand, thirty-one".