131234133 has 4 divisors (see below), whose sum is σ = 174978848. Its totient is φ = 87489420.

The previous prime is 131234123. The next prime is 131234137. The reversal of 131234133 is 331432131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331432131 = 3 ⋅110477377.

It is not a de Polignac number, because 131234133 - 2⁶ = 131234069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131234137) 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, 21872353 + ... + 21872358.

It is an arithmetic number, because the mean of its divisors is an integer number (43744712).

Almost surely, 2^131234133 is an apocalyptic number.

It is an amenable number.

131234133 is a deficient number, since it is larger than the sum of its proper divisors (43744715).

131234133 is an equidigital number, since it uses as much as digits as its factorization.

131234133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43744714.

The product of its digits is 648, while the sum is 21.

The square root of 131234133 is about 11455.7467238064. The cubic root of 131234133 is about 508.1776986475.

Adding to 131234133 its reverse (331432131), we get a palindrome (462666264).

The spelling of 131234133 in words is "one hundred thirty-one million, two hundred thirty-four thousand, one hundred thirty-three".