31063493 has 2 divisors, whose sum is σ = 31063494. Its totient is φ = 31063492.

The previous prime is 31063489. The next prime is 31063531. The reversal of 31063493 is 39436013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21687649 + 9375844 = 4657^2 + 3062^2 .

It is a cyclic number.

It is not a de Polignac number, because 31063493 - 2² = 31063489 is a prime.

It is a super-2 number, since 2×31063493² = 1929881194722098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31063393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15531746 + 15531747.

It is an arithmetic number, because the mean of its divisors is an integer number (15531747).

Almost surely, 2^31063493 is an apocalyptic number.

It is an amenable number.

31063493 is a deficient number, since it is larger than the sum of its proper divisors (1).

31063493 is an equidigital number, since it uses as much as digits as its factorization.

31063493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 31063493 is about 5573.4632859650. The cubic root of 31063493 is about 314.3523874585.

The spelling of 31063493 in words is "thirty-one million, sixty-three thousand, four hundred ninety-three".