131243234 has 4 divisors (see below), whose sum is σ = 196864854. Its totient is φ = 65621616.

The previous prime is 131243219. The next prime is 131243251. The reversal of 131243234 is 432342131.

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

It can be written as a sum of positive squares in only one way, i.e., 125507209 + 5736025 = 11203^2 + 2395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32810807 + ... + 32810810.

Almost surely, 2^131243234 is an apocalyptic number.

131243234 is a deficient number, since it is larger than the sum of its proper divisors (65621620).

131243234 is an equidigital number, since it uses as much as digits as its factorization.

131243234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65621619.

The product of its digits is 1728, while the sum is 23.

The square root of 131243234 is about 11456.1439411348. The cubic root of 131243234 is about 508.1894456380.

Adding to 131243234 its reverse (432342131), we get a palindrome (563585365).

The spelling of 131243234 in words is "one hundred thirty-one million, two hundred forty-three thousand, two hundred thirty-four".