133123310231 has 2 divisors, whose sum is σ = 133123310232. Its totient is φ = 133123310230.

The previous prime is 133123310189. The next prime is 133123310239. The reversal of 133123310231 is 132013321331.

It is a strong prime.

It is an emirp because it is prime and its reverse (132013321331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133123310231 - 2¹⁸ = 133123048087 is a prime.

It is a super-2 number, since 2×133123310231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133123310197 and 133123310206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133123310239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66561655115 + 66561655116.

It is an arithmetic number, because the mean of its divisors is an integer number (66561655116).

Almost surely, 2^133123310231 is an apocalyptic number.

133123310231 is a deficient number, since it is larger than the sum of its proper divisors (1).

133123310231 is an equidigital number, since it uses as much as digits as its factorization.

133123310231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 133123310231 its reverse (132013321331), we get a palindrome (265136631562).

The spelling of 133123310231 in words is "one hundred thirty-three billion, one hundred twenty-three million, three hundred ten thousand, two hundred thirty-one".