31714891 has 8 divisors (see below), whose sum is σ = 35256704. Its totient is φ = 28330560.

The previous prime is 31714889. The next prime is 31714913. The reversal of 31714891 is 19841713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31714891 - 2¹ = 31714889 is a prime.

It is a super-2 number, since 2×31714891² = 2011668622283762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31714811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38946 + ... + 39751.

It is an arithmetic number, because the mean of its divisors is an integer number (4407088).

Almost surely, 2^31714891 is an apocalyptic number.

31714891 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31714891 is a deficient number, since it is larger than the sum of its proper divisors (3541813).

31714891 is a wasteful number, since it uses less digits than its factorization.

31714891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78741.

The product of its digits is 6048, while the sum is 34.

The square root of 31714891 is about 5631.5975530927. The cubic root of 31714891 is about 316.5345163581.

The spelling of 31714891 in words is "thirty-one million, seven hundred fourteen thousand, eight hundred ninety-one".