131233131 has 6 divisors (see below), whose sum is σ = 189558980. Its totient is φ = 87488748.

The previous prime is 131233121. The next prime is 131233139. The reversal of 131233131 is 131332131.

It is a happy number.

It is not a de Polignac number, because 131233131 - 2²⁶ = 64124267 is a prime.

It is a super-2 number, since 2×131233131² = 34444269344126322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131233139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7290721 + ... + 7290738.

Almost surely, 2^131233131 is an apocalyptic number.

131233131 is a deficient number, since it is larger than the sum of its proper divisors (58325849).

131233131 is a wasteful number, since it uses less digits than its factorization.

131233131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14581465 (or 14581462 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 131233131 is about 11455.7029902141. The cubic root of 131233131 is about 508.1764052966.

Adding to 131233131 its reverse (131332131), we get a palindrome (262565262).

It can be divided in two parts, 1312 and 33131, that added together give a palindrome (34443).

The spelling of 131233131 in words is "one hundred thirty-one million, two hundred thirty-three thousand, one hundred thirty-one".