31677344397169 has 9 divisors (see below), whose sum is σ = 31713716521227. Its totient is φ = 31641013959504.

The previous prime is 31677344397151. The next prime is 31677344397173. The reversal of 31677344397169 is 96179344377613.

The square root of 31677344397169 is 5628263.

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

It can be written as a sum of positive squares in only one way, i.e., 2576843615025 + 29100500782144 = 1605255^2 + 5394488^2 .

It is not a de Polignac number, because 31677344397169 - 2⁵ = 31677344397137 is a prime.

It is a super-2 number, since 2×31677344397169² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31677344397098 and 31677344397107.

It is not an unprimeable number, because it can be changed into a prime (31677344697169) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5847762549 + ... + 5847767965.

Almost surely, 2^{31677344397169} is an apocalyptic number.

31677344397169 is the 5628263-rd square number.

31677344397169 is the 2814132-nd centered octagonal number.

It is an amenable number.

31677344397169 is a deficient number, since it is larger than the sum of its proper divisors (36372124058).

31677344397169 is an frugal number, since it uses more digits than its factorization.

31677344397169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912 (or 6456 counting only the distinct ones).

The product of its digits is 432081216, while the sum is 70.

The spelling of 31677344397169 in words is "thirty-one trillion, six hundred seventy-seven billion, three hundred forty-four million, three hundred ninety-seven thousand, one hundred sixty-nine".