133013113231 has 4 divisors (see below), whose sum is σ = 133187901264. Its totient is φ = 132838325200.

The previous prime is 133013113223. The next prime is 133013113241. The reversal of 133013113231 is 132311310331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133013113231 - 2³ = 133013113223 is a prime.

It is a super-2 number, since 2×133013113231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133013113241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87392875 + ... + 87394396.

It is an arithmetic number, because the mean of its divisors is an integer number (33296975316).

Almost surely, 2^133013113231 is an apocalyptic number.

133013113231 is a deficient number, since it is larger than the sum of its proper divisors (174788033).

133013113231 is an equidigital number, since it uses as much as digits as its factorization.

133013113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174788032.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 133013113231 its reverse (132311310331), we get a palindrome (265324423562).

The spelling of 133013113231 in words is "one hundred thirty-three billion, thirteen million, one hundred thirteen thousand, two hundred thirty-one".