31342793 has 2 divisors, whose sum is σ = 31342794. Its totient is φ = 31342792.

The previous prime is 31342789. The next prime is 31342807. The reversal of 31342793 is 39724313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31326409 + 16384 = 5597^2 + 128^2 .

It is a cyclic number.

It is not a de Polignac number, because 31342793 - 2² = 31342789 is a prime.

It is not a weakly prime, because it can be changed into another prime (31342733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15671396 + 15671397.

It is an arithmetic number, because the mean of its divisors is an integer number (15671397).

Almost surely, 2^31342793 is an apocalyptic number.

It is an amenable number.

31342793 is a deficient number, since it is larger than the sum of its proper divisors (1).

31342793 is an equidigital number, since it uses as much as digits as its factorization.

31342793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 31342793 is about 5598.4634499119. The cubic root of 31342793 is about 315.2917193433.

The spelling of 31342793 in words is "thirty-one million, three hundred forty-two thousand, seven hundred ninety-three".