31371713 has 2 divisors, whose sum is σ = 31371714. Its totient is φ = 31371712.

The previous prime is 31371709. The next prime is 31371727. The reversal of 31371713 is 31717313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25573249 + 5798464 = 5057^2 + 2408^2 .

It is a cyclic number.

It is not a de Polignac number, because 31371713 - 2² = 31371709 is a prime.

It is not a weakly prime, because it can be changed into another prime (31371113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15685856 + 15685857.

It is an arithmetic number, because the mean of its divisors is an integer number (15685857).

Almost surely, 2^31371713 is an apocalyptic number.

It is an amenable number.

31371713 is a deficient number, since it is larger than the sum of its proper divisors (1).

31371713 is an equidigital number, since it uses as much as digits as its factorization.

31371713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1323, while the sum is 26.

The square root of 31371713 is about 5601.0457059374. The cubic root of 31371713 is about 315.3886627724.

The spelling of 31371713 in words is "thirty-one million, three hundred seventy-one thousand, seven hundred thirteen".