31711401 has 12 divisors (see below), whose sum is σ = 46025200. Its totient is φ = 21039480.

The previous prime is 31711397. The next prime is 31711403. The reversal of 31711401 is 10411713.

It is not a de Polignac number, because 31711401 - 2² = 31711397 is a prime.

It is a super-2 number, since 2×31711401² = 2011225906765602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31711403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6451 + ... + 10248.

Almost surely, 2^31711401 is an apocalyptic number.

It is an amenable number.

31711401 is a deficient number, since it is larger than the sum of its proper divisors (14313799).

31711401 is a wasteful number, since it uses less digits than its factorization.

31711401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16916 (or 16913 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 31711401 is about 5631.2876857784. The cubic root of 31711401 is about 316.5229051354.

The spelling of 31711401 in words is "thirty-one million, seven hundred eleven thousand, four hundred one".