31138124371 has 2 divisors, whose sum is σ = 31138124372. Its totient is φ = 31138124370.

The previous prime is 31138124359. The next prime is 31138124389. The reversal of 31138124371 is 17342183113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31138124371 - 2⁹ = 31138123859 is a prime.

It is not a weakly prime, because it can be changed into another prime (31138124351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15569062185 + 15569062186.

It is an arithmetic number, because the mean of its divisors is an integer number (15569062186).

Almost surely, 2^31138124371 is an apocalyptic number.

31138124371 is a deficient number, since it is larger than the sum of its proper divisors (1).

31138124371 is an equidigital number, since it uses as much as digits as its factorization.

31138124371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The spelling of 31138124371 in words is "thirty-one billion, one hundred thirty-eight million, one hundred twenty-four thousand, three hundred seventy-one".