31321231122079 has 2 divisors, whose sum is σ = 31321231122080. Its totient is φ = 31321231122078.

The previous prime is 31321231122061. The next prime is 31321231122107. The reversal of 31321231122079 is 97022113212313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31321231122079 - 2¹⁷ = 31321230991007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321231122179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660615561039 + 15660615561040.

It is an arithmetic number, because the mean of its divisors is an integer number (15660615561040).

Almost surely, 2^{31321231122079} is an apocalyptic number.

31321231122079 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321231122079 is an equidigital number, since it uses as much as digits as its factorization.

31321231122079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 31321231122079 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, one hundred twenty-two thousand, seventy-nine".