13031489 has 2 divisors, whose sum is σ = 13031490. Its totient is φ = 13031488.

The previous prime is 13031479. The next prime is 13031509. The reversal of 13031489 is 98413031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12837889 + 193600 = 3583^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 13031489 - 2⁸ = 13031233 is a prime.

It is not a weakly prime, because it can be changed into another prime (13031419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515744 + 6515745.

It is an arithmetic number, because the mean of its divisors is an integer number (6515745).

Almost surely, 2^13031489 is an apocalyptic number.

It is an amenable number.

13031489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031489 is an equidigital number, since it uses as much as digits as its factorization.

13031489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13031489 is about 3609.9153729693. The cubic root of 13031489 is about 235.3231648662.

The spelling of 13031489 in words is "thirteen million, thirty-one thousand, four hundred eighty-nine".