31252523031 has 16 divisors (see below), whose sum is σ = 46320530400. Its totient is φ = 20825792064.

The previous prime is 31252523011. The next prime is 31252523039. The reversal of 31252523031 is 13032525213.

It is a happy number.

It is not a de Polignac number, because 31252523031 - 2⁶ = 31252522967 is a prime.

It is a super-2 number, since 2×31252523031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31252522986 and 31252523004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31252523039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193806 + ... + 316331.

It is an arithmetic number, because the mean of its divisors is an integer number (2895033150).

Almost surely, 2^31252523031 is an apocalyptic number.

31252523031 is a deficient number, since it is larger than the sum of its proper divisors (15068007369).

31252523031 is a wasteful number, since it uses less digits than its factorization.

31252523031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512415 (or 512409 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 31252523031 in words is "thirty-one billion, two hundred fifty-two million, five hundred twenty-three thousand, thirty-one".