233131212397 has 2 divisors, whose sum is σ = 233131212398. Its totient is φ = 233131212396.

The previous prime is 233131212373. The next prime is 233131212403. The reversal of 233131212397 is 793212131332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129463955721 + 103667256676 = 359811^2 + 321974^2 .

It is a cyclic number.

It is not a de Polignac number, because 233131212397 - 2⁷ = 233131212269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233131242397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116565606198 + 116565606199.

It is an arithmetic number, because the mean of its divisors is an integer number (116565606199).

Almost surely, 2^233131212397 is an apocalyptic number.

It is an amenable number.

233131212397 is a deficient number, since it is larger than the sum of its proper divisors (1).

233131212397 is an equidigital number, since it uses as much as digits as its factorization.

233131212397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The spelling of 233131212397 in words is "two hundred thirty-three billion, one hundred thirty-one million, two hundred twelve thousand, three hundred ninety-seven".