31372469 has 2 divisors, whose sum is σ = 31372470. Its totient is φ = 31372468.

The previous prime is 31372459. The next prime is 31372493. The reversal of 31372469 is 96427313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16703569 + 14668900 = 4087^2 + 3830^2 .

It is a cyclic number.

It is not a de Polignac number, because 31372469 - 2²⁴ = 14595253 is a prime.

It is a super-3 number, since 3×31372469³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31372459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15686234 + 15686235.

It is an arithmetic number, because the mean of its divisors is an integer number (15686235).

Almost surely, 2^31372469 is an apocalyptic number.

It is an amenable number.

31372469 is a deficient number, since it is larger than the sum of its proper divisors (1).

31372469 is an equidigital number, since it uses as much as digits as its factorization.

31372469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 31372469 is about 5601.1131929287. The cubic root of 31372469 is about 315.3911961790.

The spelling of 31372469 in words is "thirty-one million, three hundred seventy-two thousand, four hundred sixty-nine".