31400422012139 has 2 divisors, whose sum is σ = 31400422012140. Its totient is φ = 31400422012138.

The previous prime is 31400422012121. The next prime is 31400422012189. The reversal of 31400422012139 is 93121022400413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31400422012139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31400422012189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700211006069 + 15700211006070.

It is an arithmetic number, because the mean of its divisors is an integer number (15700211006070).

Almost surely, 2^{31400422012139} is an apocalyptic number.

31400422012139 is a deficient number, since it is larger than the sum of its proper divisors (1).

31400422012139 is an equidigital number, since it uses as much as digits as its factorization.

31400422012139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 31400422012139 in words is "thirty-one trillion, four hundred billion, four hundred twenty-two million, twelve thousand, one hundred thirty-nine".