31150465139 has 2 divisors, whose sum is σ = 31150465140. Its totient is φ = 31150465138.

The previous prime is 31150465069. The next prime is 31150465153. The reversal of 31150465139 is 93156405113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31150465139 is a prime.

It is not a weakly prime, because it can be changed into another prime (31150464139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15575232569 + 15575232570.

It is an arithmetic number, because the mean of its divisors is an integer number (15575232570).

Almost surely, 2^31150465139 is an apocalyptic number.

31150465139 is a deficient number, since it is larger than the sum of its proper divisors (1).

31150465139 is an equidigital number, since it uses as much as digits as its factorization.

31150465139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 38.

The spelling of 31150465139 in words is "thirty-one billion, one hundred fifty million, four hundred sixty-five thousand, one hundred thirty-nine".