31453943 has 2 divisors, whose sum is σ = 31453944. Its totient is φ = 31453942.

The previous prime is 31453931. The next prime is 31453957. The reversal of 31453943 is 34935413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31453943 - 2⁶ = 31453879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31453993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726971 + 15726972.

It is an arithmetic number, because the mean of its divisors is an integer number (15726972).

Almost surely, 2^31453943 is an apocalyptic number.

31453943 is a deficient number, since it is larger than the sum of its proper divisors (1).

31453943 is an equidigital number, since it uses as much as digits as its factorization.

31453943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 31453943 is about 5608.3814955832. The cubic root of 31453943 is about 315.6639828072.

The spelling of 31453943 in words is "thirty-one million, four hundred fifty-three thousand, nine hundred forty-three".