31093881068651 has 2 divisors, whose sum is σ = 31093881068652. Its totient is φ = 31093881068650.

The previous prime is 31093881068623. The next prime is 31093881068689. The reversal of 31093881068651 is 15686018839013.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31093881068651 is a prime.

It is a super-2 number, since 2×31093881068651² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31093881068611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15546940534325 + 15546940534326.

It is an arithmetic number, because the mean of its divisors is an integer number (15546940534326).

Almost surely, 2^{31093881068651} is an apocalyptic number.

31093881068651 is a deficient number, since it is larger than the sum of its proper divisors (1).

31093881068651 is an equidigital number, since it uses as much as digits as its factorization.

31093881068651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 31093881068651 in words is "thirty-one trillion, ninety-three billion, eight hundred eighty-one million, sixty-eight thousand, six hundred fifty-one".