231267963133 has 2 divisors, whose sum is σ = 231267963134. Its totient is φ = 231267963132.

The previous prime is 231267963023. The next prime is 231267963137. The reversal of 231267963133 is 331369762132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230551704964 + 716258169 = 480158^2 + 26763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231267963133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231267963137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115633981566 + 115633981567.

It is an arithmetic number, because the mean of its divisors is an integer number (115633981567).

Almost surely, 2^231267963133 is an apocalyptic number.

It is an amenable number.

231267963133 is a deficient number, since it is larger than the sum of its proper divisors (1).

231267963133 is an equidigital number, since it uses as much as digits as its factorization.

231267963133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 46.

The spelling of 231267963133 in words is "two hundred thirty-one billion, two hundred sixty-seven million, nine hundred sixty-three thousand, one hundred thirty-three".