31311442420079 has 2 divisors, whose sum is σ = 31311442420080. Its totient is φ = 31311442420078.

The previous prime is 31311442420019. The next prime is 31311442420103. The reversal of 31311442420079 is 97002424411313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31311442420079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31311442420019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655721210039 + 15655721210040.

It is an arithmetic number, because the mean of its divisors is an integer number (15655721210040).

Almost surely, 2^{31311442420079} is an apocalyptic number.

31311442420079 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311442420079 is an equidigital number, since it uses as much as digits as its factorization.

31311442420079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 31311442420079 in words is "thirty-one trillion, three hundred eleven billion, four hundred forty-two million, four hundred twenty thousand, seventy-nine".