31713401 has 2 divisors, whose sum is σ = 31713402. Its totient is φ = 31713400.

The previous prime is 31713373. The next prime is 31713433. The reversal of 31713401 is 10431713.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 1628176 = 5485^2 + 1276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31713401 is a prime.

It is not a weakly prime, because it can be changed into another prime (31713491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15856700 + 15856701.

It is an arithmetic number, because the mean of its divisors is an integer number (15856701).

Almost surely, 2^31713401 is an apocalyptic number.

It is an amenable number.

31713401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31713401 is an equidigital number, since it uses as much as digits as its factorization.

31713401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 31713401 is about 5631.4652622564. The cubic root of 31713401 is about 316.5295592354.

The spelling of 31713401 in words is "thirty-one million, seven hundred thirteen thousand, four hundred one".