31520500152 has 16 divisors (see below), whose sum is σ = 78801250440. Its totient is φ = 10506833376.

The previous prime is 31520500117. The next prime is 31520500153. The reversal of 31520500152 is 25100502513.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1313354173 = 31520500152 / (3 + 1 + 5 + 2 + 0 + 5 + 0 + 0 + 1 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31520500153) 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, 656677063 + ... + 656677110.

Almost surely, 2^31520500152 is an apocalyptic number.

It is an amenable number.

31520500152 is an abundant number, since it is smaller than the sum of its proper divisors (47280750288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31520500152 is a wasteful number, since it uses less digits than its factorization.

31520500152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313354182 (or 1313354178 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 31520500152 in words is "thirty-one billion, five hundred twenty million, five hundred thousand, one hundred fifty-two".