131233233 has 4 divisors (see below), whose sum is σ = 174977648. Its totient is φ = 87488820.

The previous prime is 131233229. The next prime is 131233237. The reversal of 131233233 is 332332131.

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.

It is an interprime number because it is at equal distance from previous prime (131233229) and next prime (131233237).

It is not a de Polignac number, because 131233233 - 2² = 131233229 is a prime.

It is a super-2 number, since 2×131233233² = 34444322887264578, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131233237) 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, 21872203 + ... + 21872208.

It is an arithmetic number, because the mean of its divisors is an integer number (43744412).

Almost surely, 2^131233233 is an apocalyptic number.

It is an amenable number.

131233233 is a deficient number, since it is larger than the sum of its proper divisors (43744415).

131233233 is an equidigital number, since it uses as much as digits as its factorization.

131233233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43744414.

The product of its digits is 972, while the sum is 21.

The square root of 131233233 is about 11455.7074421443. The cubic root of 131233233 is about 508.1765369554.

Adding to 131233233 its reverse (332332131), we get a palindrome (463565364).

The spelling of 131233233 in words is "one hundred thirty-one million, two hundred thirty-three thousand, two hundred thirty-three".