131232257 has 8 divisors (see below), whose sum is σ = 141638784. Its totient is φ = 120870288.

The previous prime is 131232253. The next prime is 131232307. The reversal of 131232257 is 752232131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131232257 - 2² = 131232253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131232251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4883 + ... + 16920.

It is an arithmetic number, because the mean of its divisors is an integer number (17704848).

Almost surely, 2^131232257 is an apocalyptic number.

It is an amenable number.

131232257 is a deficient number, since it is larger than the sum of its proper divisors (10406527).

131232257 is a wasteful number, since it uses less digits than its factorization.

131232257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22279.

The product of its digits is 2520, while the sum is 26.

The square root of 131232257 is about 11455.6648432119. The cubic root of 131232257 is about 508.1752771588.

Adding to 131232257 its reverse (752232131), we get a palindrome (883464388).

The spelling of 131232257 in words is "one hundred thirty-one million, two hundred thirty-two thousand, two hundred fifty-seven".