31508735049 has 75 divisors (see below), whose sum is σ = 52094730765. Its totient is φ = 18979048440.

The previous prime is 31508734991. The next prime is 31508735057. The reversal of 31508735049 is 94053780513.

The square root of 31508735049 is 177507.

It is a perfect power (a square), and thus also a powerful number.

31508735049 is a `hidden beast` number, since 31 + 508 + 73 + 5 + 0 + 49 = 666.

It is not a de Polignac number, because 31508735049 - 2¹⁷ = 31508603977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31508734995 and 31508735013.

It is not an unprimeable number, because it can be changed into a prime (31508735249) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 193305042 + ... + 193305204.

Almost surely, 2^31508735049 is an apocalyptic number.

31508735049 is the 177507-th square number.

31508735049 is the 88754-th centered octagonal number.

It is an amenable number.

31508735049 is a deficient number, since it is larger than the sum of its proper divisors (20585995716).

31508735049 is an frugal number, since it uses more digits than its factorization.

31508735049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 31508735049 in words is "thirty-one billion, five hundred eight million, seven hundred thirty-five thousand, forty-nine".