31949125034689 has 2 divisors, whose sum is σ = 31949125034690. Its totient is φ = 31949125034688.

The previous prime is 31949125034663. The next prime is 31949125034713. The reversal of 31949125034689 is 98643052194913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25324848464400 + 6624276570289 = 5032380^2 + 2573767^2 .

It is a cyclic number.

It is not a de Polignac number, because 31949125034689 - 2¹⁷ = 31949124903617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31949125034689.

It is not a weakly prime, because it can be changed into another prime (31949125034389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15974562517344 + 15974562517345.

It is an arithmetic number, because the mean of its divisors is an integer number (15974562517345).

Almost surely, 2^{31949125034689} is an apocalyptic number.

It is an amenable number.

31949125034689 is a deficient number, since it is larger than the sum of its proper divisors (1).

31949125034689 is an equidigital number, since it uses as much as digits as its factorization.

31949125034689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50388480, while the sum is 64.

The spelling of 31949125034689 in words is "thirty-one trillion, nine hundred forty-nine billion, one hundred twenty-five million, thirty-four thousand, six hundred eighty-nine".