31552051540 has 12 divisors (see below), whose sum is σ = 66259308276. Its totient is φ = 12620820608.

The previous prime is 31552051511. The next prime is 31552051547. The reversal of 31552051540 is 4515025513.

It can be written as a sum of positive squares in 2 ways, for example, as 15090648336 + 16461403204 = 122844^2 + 128302^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31552051547) 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, 788801269 + ... + 788801308.

It is an arithmetic number, because the mean of its divisors is an integer number (5521609023).

Almost surely, 2^31552051540 is an apocalyptic number.

It is an amenable number.

31552051540 is an abundant number, since it is smaller than the sum of its proper divisors (34707256736).

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

31552051540 is a wasteful number, since it uses less digits than its factorization.

31552051540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577602586 (or 1577602584 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 31552051540 in words is "thirty-one billion, five hundred fifty-two million, fifty-one thousand, five hundred forty".