31523055506 has 8 divisors (see below), whose sum is σ = 48915086220. Its totient is φ = 15218026768.

The previous prime is 31523055503. The next prime is 31523055517. The reversal of 31523055506 is 60555032513.

It can be written as a sum of positive squares in 2 ways, for example, as 31337850625 + 185204881 = 177025^2 + 13609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (31523055503) 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, 271750421 + ... + 271750536.

Almost surely, 2^31523055506 is an apocalyptic number.

31523055506 is a deficient number, since it is larger than the sum of its proper divisors (17392030714).

31523055506 is a wasteful number, since it uses less digits than its factorization.

31523055506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543500988.

The product of its (nonzero) digits is 67500, while the sum is 35.

The spelling of 31523055506 in words is "thirty-one billion, five hundred twenty-three million, fifty-five thousand, five hundred six".