31730677 has 6 divisors (see below), whose sum is σ = 34877654. Its totient is φ = 28845960.

The previous prime is 31730659. The next prime is 31730683. The reversal of 31730677 is 77603713.

It can be written as a sum of positive squares in only one way, i.e., 30371121 + 1359556 = 5511^2 + 1166^2 .

It is not a de Polignac number, because 31730677 - 2⁷ = 31730549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31730477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130998 + ... + 131239.

Almost surely, 2^31730677 is an apocalyptic number.

It is an amenable number.

31730677 is a deficient number, since it is larger than the sum of its proper divisors (3146977).

31730677 is a wasteful number, since it uses less digits than its factorization.

31730677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262259 (or 262248 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 34.

The square root of 31730677 is about 5632.9989348481. The cubic root of 31730677 is about 316.5870257093.

The spelling of 31730677 in words is "thirty-one million, seven hundred thirty thousand, six hundred seventy-seven".