31070489 has 2 divisors, whose sum is σ = 31070490. Its totient is φ = 31070488.

The previous prime is 31070483. The next prime is 31070519. The reversal of 31070489 is 98407013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26265625 + 4804864 = 5125^2 + 2192^2 .

It is a cyclic number.

It is not a de Polignac number, because 31070489 - 2⁸ = 31070233 is a prime.

It is not a weakly prime, because it can be changed into another prime (31070483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15535244 + 15535245.

It is an arithmetic number, because the mean of its divisors is an integer number (15535245).

Almost surely, 2^31070489 is an apocalyptic number.

It is an amenable number.

31070489 is a deficient number, since it is larger than the sum of its proper divisors (1).

31070489 is an equidigital number, since it uses as much as digits as its factorization.

31070489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 31070489 is about 5574.0908675765. The cubic root of 31070489 is about 314.3759847643.

The spelling of 31070489 in words is "thirty-one million, seventy thousand, four hundred eighty-nine".