13231311077 has 2 divisors, whose sum is σ = 13231311078. Its totient is φ = 13231311076.

The previous prime is 13231311059. The next prime is 13231311211. The reversal of 13231311077 is 77011313231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10954971556 + 2276339521 = 104666^2 + 47711^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231311077 - 2¹⁴ = 13231294693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231311047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615655538 + 6615655539.

It is an arithmetic number, because the mean of its divisors is an integer number (6615655539).

Almost surely, 2^13231311077 is an apocalyptic number.

It is an amenable number.

13231311077 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231311077 is an equidigital number, since it uses as much as digits as its factorization.

13231311077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 29.

The spelling of 13231311077 in words is "thirteen billion, two hundred thirty-one million, three hundred eleven thousand, seventy-seven".