7731888153313 has 2 divisors, whose sum is σ = 7731888153314. Its totient is φ = 7731888153312.

The previous prime is 7731888153251. The next prime is 7731888153337. The reversal of 7731888153313 is 3133518881377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7168775986849 + 563112166464 = 2677457^2 + 750408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7731888153313 is a prime.

It is not a weakly prime, because it can be changed into another prime (7731888153343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3865944076656 + 3865944076657.

It is an arithmetic number, because the mean of its divisors is an integer number (3865944076657).

Almost surely, 2^{7731888153313} is an apocalyptic number.

It is an amenable number.

7731888153313 is a deficient number, since it is larger than the sum of its proper divisors (1).

7731888153313 is an equidigital number, since it uses as much as digits as its factorization.

7731888153313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 58.

The spelling of 7731888153313 in words is "seven trillion, seven hundred thirty-one billion, eight hundred eighty-eight million, one hundred fifty-three thousand, three hundred thirteen".