3131332331389 has 2 divisors, whose sum is σ = 3131332331390. Its totient is φ = 3131332331388.

The previous prime is 3131332331299. The next prime is 3131332331399. The reversal of 3131332331389 is 9831332331313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2201039288100 + 930293043289 = 1483590^2 + 964517^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131332331389 - 2⁷ = 3131332331261 is a prime.

It is a super-2 number, since 2×3131332331389² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131332331399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565666165694 + 1565666165695.

It is an arithmetic number, because the mean of its divisors is an integer number (1565666165695).

Almost surely, 2^{3131332331389} is an apocalyptic number.

It is an amenable number.

3131332331389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131332331389 is an equidigital number, since it uses as much as digits as its factorization.

3131332331389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 43.

The spelling of 3131332331389 in words is "three trillion, one hundred thirty-one billion, three hundred thirty-two million, three hundred thirty-one thousand, three hundred eighty-nine".