31342943 has 2 divisors, whose sum is σ = 31342944. Its totient is φ = 31342942.

The previous prime is 31342933. The next prime is 31342957. The reversal of 31342943 is 34924313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31342943 - 2⁸ = 31342687 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 (31342903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15671471 + 15671472.

It is an arithmetic number, because the mean of its divisors is an integer number (15671472).

Almost surely, 2^31342943 is an apocalyptic number.

31342943 is a deficient number, since it is larger than the sum of its proper divisors (1).

31342943 is an equidigital number, since it uses as much as digits as its factorization.

31342943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 31342943 is about 5598.4768464289. The cubic root of 31342943 is about 315.2922223157.

The spelling of 31342943 in words is "thirty-one million, three hundred forty-two thousand, nine hundred forty-three".