31149671701 has 2 divisors, whose sum is σ = 31149671702. Its totient is φ = 31149671700.

The previous prime is 31149671687. The next prime is 31149671743. The reversal of 31149671701 is 10717694113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26546184900 + 4603486801 = 162930^2 + 67849^2 .

It is a cyclic number.

It is not a de Polignac number, because 31149671701 - 2⁵ = 31149671669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31149674701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15574835850 + 15574835851.

It is an arithmetic number, because the mean of its divisors is an integer number (15574835851).

Almost surely, 2^31149671701 is an apocalyptic number.

It is an amenable number.

31149671701 is a deficient number, since it is larger than the sum of its proper divisors (1).

31149671701 is an equidigital number, since it uses as much as digits as its factorization.

31149671701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 31149671701 in words is "thirty-one billion, one hundred forty-nine million, six hundred seventy-one thousand, seven hundred one".