31122431339 has 4 divisors (see below), whose sum is σ = 31846208856. Its totient is φ = 30398653824.

The previous prime is 31122431321. The next prime is 31122431359. The reversal of 31122431339 is 93313422113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31122431339 - 2⁸ = 31122431083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31122431309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361888694 + ... + 361888779.

It is an arithmetic number, because the mean of its divisors is an integer number (7961552214).

Almost surely, 2^31122431339 is an apocalyptic number.

31122431339 is a deficient number, since it is larger than the sum of its proper divisors (723777517).

31122431339 is an equidigital number, since it uses as much as digits as its factorization.

31122431339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723777516.

The product of its digits is 11664, while the sum is 32.

The spelling of 31122431339 in words is "thirty-one billion, one hundred twenty-two million, four hundred thirty-one thousand, three hundred thirty-nine".