31552717161 has 16 divisors (see below), whose sum is σ = 48083580288. Its totient is φ = 18028905600.

The previous prime is 31552717151. The next prime is 31552717181. The reversal of 31552717161 is 16171725513.

It is not a de Polignac number, because 31552717161 - 2¹⁰ = 31552716137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31552717151) 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, 335821 + ... + 419381.

It is an arithmetic number, because the mean of its divisors is an integer number (3005223768).

Almost surely, 2^31552717161 is an apocalyptic number.

It is an amenable number.

31552717161 is a deficient number, since it is larger than the sum of its proper divisors (16530863127).

31552717161 is a wasteful number, since it uses less digits than its factorization.

31552717161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101552.

The product of its digits is 44100, while the sum is 39.

The spelling of 31552717161 in words is "thirty-one billion, five hundred fifty-two million, seven hundred seventeen thousand, one hundred sixty-one".