31112210011969 has 2 divisors, whose sum is σ = 31112210011970. Its totient is φ = 31112210011968.

The previous prime is 31112210011903. The next prime is 31112210011979. The reversal of 31112210011969 is 96911001221113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28401577051969 + 2710632960000 = 5329313^2 + 1646400^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112210011969 - 2¹¹ = 31112210009921 is a prime.

It is a super-2 number, since 2×31112210011969² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31112210011979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556105005984 + 15556105005985.

It is an arithmetic number, because the mean of its divisors is an integer number (15556105005985).

Almost surely, 2^{31112210011969} is an apocalyptic number.

It is an amenable number.

31112210011969 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112210011969 is an equidigital number, since it uses as much as digits as its factorization.

31112210011969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 31112210011969 in words is "thirty-one trillion, one hundred twelve billion, two hundred ten million, eleven thousand, nine hundred sixty-nine".