31462889 has 2 divisors, whose sum is σ = 31462890. Its totient is φ = 31462888.

The previous prime is 31462877. The next prime is 31462897. The reversal of 31462889 is 98826413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31449664 + 13225 = 5608^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 31462889 - 2²⁰ = 30414313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31462289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15731444 + 15731445.

It is an arithmetic number, because the mean of its divisors is an integer number (15731445).

Almost surely, 2^31462889 is an apocalyptic number.

It is an amenable number.

31462889 is a deficient number, since it is larger than the sum of its proper divisors (1).

31462889 is an equidigital number, since it uses as much as digits as its factorization.

31462889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 31462889 is about 5609.1789951828. The cubic root of 31462889 is about 315.6939065840.

The spelling of 31462889 in words is "thirty-one million, four hundred sixty-two thousand, eight hundred eighty-nine".