31713269 has 12 divisors (see below), whose sum is σ = 37543584. Its totient is φ = 26240592.

The previous prime is 31713259. The next prime is 31713307. The reversal of 31713269 is 96231713.

It is a happy number.

It is not a de Polignac number, because 31713269 - 2⁸ = 31713013 is a prime.

It is a super-2 number, since 2×31713269² = 2011462861332722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31713259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3194 + ... + 8580.

It is an arithmetic number, because the mean of its divisors is an integer number (3128632).

Almost surely, 2^31713269 is an apocalyptic number.

It is an amenable number.

31713269 is a deficient number, since it is larger than the sum of its proper divisors (5830315).

31713269 is an equidigital number, since it uses as much as digits as its factorization.

31713269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452 (or 5423 counting only the distinct ones).

The product of its digits is 6804, while the sum is 32.

The square root of 31713269 is about 5631.4535423814. The cubic root of 31713269 is about 316.5291200734.

The spelling of 31713269 in words is "thirty-one million, seven hundred thirteen thousand, two hundred sixty-nine".