31452943 has 2 divisors, whose sum is σ = 31452944. Its totient is φ = 31452942.

The previous prime is 31452901. The next prime is 31452973. The reversal of 31452943 is 34925413.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31452943 is a prime.

It is a super-2 number, since 2×31452943² = 1978575246722498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31452973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726471 + 15726472.

It is an arithmetic number, because the mean of its divisors is an integer number (15726472).

Almost surely, 2^31452943 is an apocalyptic number.

31452943 is a deficient number, since it is larger than the sum of its proper divisors (1).

31452943 is an equidigital number, since it uses as much as digits as its factorization.

31452943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 31452943 is about 5608.2923425941. The cubic root of 31452943 is about 315.6606375209.

The spelling of 31452943 in words is "thirty-one million, four hundred fifty-two thousand, nine hundred forty-three".