3131111231077 has 2 divisors, whose sum is σ = 3131111231078. Its totient is φ = 3131111231076.

The previous prime is 3131111231063. The next prime is 3131111231123. The reversal of 3131111231077 is 7701321111313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1700118700996 + 1430992530081 = 1303886^2 + 1196241^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131111231077 - 2¹⁵ = 3131111198309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131111231377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565555615538 + 1565555615539.

It is an arithmetic number, because the mean of its divisors is an integer number (1565555615539).

Almost surely, 2^{3131111231077} is an apocalyptic number.

It is an amenable number.

3131111231077 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131111231077 is an equidigital number, since it uses as much as digits as its factorization.

3131111231077 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 31.

The spelling of 3131111231077 in words is "three trillion, one hundred thirty-one billion, one hundred eleven million, two hundred thirty-one thousand, seventy-seven".