131233151 has 4 divisors (see below), whose sum is σ = 149980752. Its totient is φ = 112485552.

The previous prime is 131233139. The next prime is 131233153. The reversal of 131233151 is 151332131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131233151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131233153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9373790 + ... + 9373803.

It is an arithmetic number, because the mean of its divisors is an integer number (37495188).

Almost surely, 2^131233151 is an apocalyptic number.

131233151 is a deficient number, since it is larger than the sum of its proper divisors (18747601).

131233151 is an equidigital number, since it uses as much as digits as its factorization.

131233151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747600.

The product of its digits is 270, while the sum is 20.

The square root of 131233151 is about 11455.7038631417. The cubic root of 131233151 is about 508.1764311121.

Adding to 131233151 its reverse (151332131), we get a palindrome (282565282).

The spelling of 131233151 in words is "one hundred thirty-one million, two hundred thirty-three thousand, one hundred fifty-one".