131161233 has 16 divisors (see below), whose sum is σ = 200217600. Its totient is φ = 74816976.

The previous prime is 131161231. The next prime is 131161253. The reversal of 131161233 is 332161131.

It is not a de Polignac number, because 131161233 - 2¹ = 131161231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (131161231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7366 + ... + 17792.

It is an arithmetic number, because the mean of its divisors is an integer number (12513600).

Almost surely, 2^131161233 is an apocalyptic number.

It is an amenable number.

131161233 is a deficient number, since it is larger than the sum of its proper divisors (69056367).

131161233 is a wasteful number, since it uses less digits than its factorization.

131161233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036.

The product of its digits is 324, while the sum is 21.

The square root of 131161233 is about 11452.5644726411. The cubic root of 131161233 is about 508.0835843721.

The spelling of 131161233 in words is "one hundred thirty-one million, one hundred sixty-one thousand, two hundred thirty-three".