31074681 has 32 divisors (see below), whose sum is σ = 47139840. Its totient is φ = 18043200.

The previous prime is 31074653. The next prime is 31074683. The reversal of 31074681 is 18647013.

It is a happy number.

It is not a de Polignac number, because 31074681 - 2⁵ = 31074649 is a prime.

It is a super-2 number, since 2×31074681² = 1931271598503522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31074683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86380 + ... + 86738.

It is an arithmetic number, because the mean of its divisors is an integer number (1473120).

Almost surely, 2^31074681 is an apocalyptic number.

It is an amenable number.

31074681 is a deficient number, since it is larger than the sum of its proper divisors (16065159).

31074681 is a wasteful number, since it uses less digits than its factorization.

31074681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 31074681 is about 5574.4668803393. The cubic root of 31074681 is about 314.3901225620.

The spelling of 31074681 in words is "thirty-one million, seventy-four thousand, six hundred eighty-one".