31371154673 has 2 divisors, whose sum is σ = 31371154674. Its totient is φ = 31371154672.

The previous prime is 31371154667. The next prime is 31371154693. The reversal of 31371154673 is 37645117313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25257791329 + 6113363344 = 158927^2 + 78188^2 .

It is a cyclic number.

It is not a de Polignac number, because 31371154673 - 2⁸ = 31371154417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31371154673.

It is not a weakly prime, because it can be changed into another prime (31371154693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15685577336 + 15685577337.

It is an arithmetic number, because the mean of its divisors is an integer number (15685577337).

Almost surely, 2^31371154673 is an apocalyptic number.

It is an amenable number.

31371154673 is a deficient number, since it is larger than the sum of its proper divisors (1).

31371154673 is an equidigital number, since it uses as much as digits as its factorization.

31371154673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The spelling of 31371154673 in words is "thirty-one billion, three hundred seventy-one million, one hundred fifty-four thousand, six hundred seventy-three".