131351233 has 4 divisors (see below), whose sum is σ = 141455188. Its totient is φ = 121247280.

The previous prime is 131351219. The next prime is 131351257. The reversal of 131351233 is 332153131.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38093584 + 93257649 = 6172^2 + 9657^2 .

It is a cyclic number.

It is not a de Polignac number, because 131351233 - 2⁵ = 131351201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131351203) 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, 5051958 + ... + 5051983.

It is an arithmetic number, because the mean of its divisors is an integer number (35363797).

Almost surely, 2^131351233 is an apocalyptic number.

131351233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131351233 is a deficient number, since it is larger than the sum of its proper divisors (10103955).

131351233 is a wasteful number, since it uses less digits than its factorization.

131351233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103954.

The product of its digits is 810, while the sum is 22.

The square root of 131351233 is about 11460.8565561218. The cubic root of 131351233 is about 508.3288024201.

The spelling of 131351233 in words is "one hundred thirty-one million, three hundred fifty-one thousand, two hundred thirty-three".