31954589 has 2 divisors, whose sum is σ = 31954590. Its totient is φ = 31954588.

The previous prime is 31954579. The next prime is 31954591. The reversal of 31954589 is 98545913.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28408900 + 3545689 = 5330^2 + 1883^2 .

It is a cyclic number.

It is not a de Polignac number, because 31954589 - 2¹² = 31950493 is a prime.

Together with 31954591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31954579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15977294 + 15977295.

It is an arithmetic number, because the mean of its divisors is an integer number (15977295).

Almost surely, 2^31954589 is an apocalyptic number.

It is an amenable number.

31954589 is a deficient number, since it is larger than the sum of its proper divisors (1).

31954589 is an equidigital number, since it uses as much as digits as its factorization.

31954589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 31954589 is about 5652.8390212353. The cubic root of 31954589 is about 317.3299612379.

The spelling of 31954589 in words is "thirty-one million, nine hundred fifty-four thousand, five hundred eighty-nine".