31489063 has 2 divisors, whose sum is σ = 31489064. Its totient is φ = 31489062.

The previous prime is 31489043. The next prime is 31489069. The reversal of 31489063 is 36098413.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31489063 is a prime.

It is a super-2 number, since 2×31489063² = 1983122177235938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31489069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15744531 + 15744532.

It is an arithmetic number, because the mean of its divisors is an integer number (15744532).

Almost surely, 2^31489063 is an apocalyptic number.

31489063 is a deficient number, since it is larger than the sum of its proper divisors (1).

31489063 is an equidigital number, since it uses as much as digits as its factorization.

31489063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 31489063 is about 5611.5116501706. The cubic root of 31489063 is about 315.7814243158.

The spelling of 31489063 in words is "thirty-one million, four hundred eighty-nine thousand, sixty-three".