31442963 has 2 divisors, whose sum is σ = 31442964. Its totient is φ = 31442962.

The previous prime is 31442951. The next prime is 31443031. The reversal of 31442963 is 36924413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31442963 - 2¹⁸ = 31180819 is a prime.

It is not a weakly prime, because it can be changed into another prime (31442263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721481 + 15721482.

It is an arithmetic number, because the mean of its divisors is an integer number (15721482).

Almost surely, 2^31442963 is an apocalyptic number.

31442963 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442963 is an equidigital number, since it uses as much as digits as its factorization.

31442963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 31442963 is about 5607.4025181005. The cubic root of 31442963 is about 315.6272476787.

The spelling of 31442963 in words is "thirty-one million, four hundred forty-two thousand, nine hundred sixty-three".