31123023320969 has 2 divisors, whose sum is σ = 31123023320970. Its totient is φ = 31123023320968.

The previous prime is 31123023320953. The next prime is 31123023321029. The reversal of 31123023320969 is 96902332032113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22730848865344 + 8392174455625 = 4767688^2 + 2896925^2 .

It is a cyclic number.

It is not a de Polignac number, because 31123023320969 - 2⁴ = 31123023320953 is a prime.

It is a super-2 number, since 2×31123023320969² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31123023322969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561511660484 + 15561511660485.

It is an arithmetic number, because the mean of its divisors is an integer number (15561511660485).

Almost surely, 2^{31123023320969} is an apocalyptic number.

It is an amenable number.

31123023320969 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123023320969 is an equidigital number, since it uses as much as digits as its factorization.

31123023320969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 44.

The spelling of 31123023320969 in words is "thirty-one trillion, one hundred twenty-three billion, twenty-three million, three hundred twenty thousand, nine hundred sixty-nine".