311431308207269 has 2 divisors, whose sum is σ = 311431308207270. Its totient is φ = 311431308207268.

The previous prime is 311431308207259. The next prime is 311431308207277. The reversal of 311431308207269 is 962702803134113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289138396564900 + 22292911642369 = 17004070^2 + 4721537^2 .

It is a cyclic number.

It is not a de Polignac number, because 311431308207269 - 2⁸ = 311431308207013 is a prime.

It is a super-2 number, since 2×311431308207269² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311431308207259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155715654103634 + 155715654103635.

It is an arithmetic number, because the mean of its divisors is an integer number (155715654103635).

Almost surely, 2^{311431308207269} is an apocalyptic number.

It is an amenable number.

311431308207269 is a deficient number, since it is larger than the sum of its proper divisors (1).

311431308207269 is an equidigital number, since it uses as much as digits as its factorization.

311431308207269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 311431308207269 in words is "three hundred eleven trillion, four hundred thirty-one billion, three hundred eight million, two hundred seven thousand, two hundred sixty-nine".