131233746 has 32 divisors (see below), whose sum is σ = 308073600. Its totient is φ = 36481536.

The previous prime is 131233723. The next prime is 131233747. The reversal of 131233746 is 647332131.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131233747) 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 15 ways as a sum of consecutive naturals, for example, 40671 + ... + 43778.

It is an arithmetic number, because the mean of its divisors is an integer number (9627300).

Almost surely, 2^131233746 is an apocalyptic number.

131233746 is an abundant number, since it is smaller than the sum of its proper divisors (176839854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131233746 is a wasteful number, since it uses less digits than its factorization.

131233746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84498.

The product of its digits is 9072, while the sum is 30.

The square root of 131233746 is about 11455.7298327082. The cubic root of 131233746 is about 508.1771991206.

Adding to 131233746 its reverse (647332131), we get a palindrome (778565877).

The spelling of 131233746 in words is "one hundred thirty-one million, two hundred thirty-three thousand, seven hundred forty-six".