233131199969 has 2 divisors, whose sum is σ = 233131199970. Its totient is φ = 233131199968.

The previous prime is 233131199953. The next prime is 233131199981. The reversal of 233131199969 is 969991131332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159351059344 + 73780140625 = 399188^2 + 271625^2 .

It is a cyclic number.

It is not a de Polignac number, because 233131199969 - 2⁴ = 233131199953 is a prime.

It is a super-2 number, since 2×233131199969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (233131199929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116565599984 + 116565599985.

It is an arithmetic number, because the mean of its divisors is an integer number (116565599985).

Almost surely, 2^233131199969 is an apocalyptic number.

It is an amenable number.

233131199969 is a deficient number, since it is larger than the sum of its proper divisors (1).

233131199969 is an equidigital number, since it uses as much as digits as its factorization.

233131199969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2125764, while the sum is 56.

The spelling of 233131199969 in words is "two hundred thirty-three billion, one hundred thirty-one million, one hundred ninety-nine thousand, nine hundred sixty-nine".