131231276 has 36 divisors (see below), whose sum is σ = 254222136. Its totient is φ = 59270640.

The previous prime is 131231273. The next prime is 131231291. The reversal of 131231276 is 672132131.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not an unprimeable number, because it can be changed into a prime (131231273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 835790 + ... + 835946.

It is an arithmetic number, because the mean of its divisors is an integer number (7061726).

Almost surely, 2^131231276 is an apocalyptic number.

It is an amenable number.

131231276 is a deficient number, since it is larger than the sum of its proper divisors (122990860).

131231276 is an equidigital number, since it uses as much as digits as its factorization.

131231276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 170 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 131231276 is about 11455.6220258876. The cubic root of 131231276 is about 508.1740109021.

The spelling of 131231276 in words is "one hundred thirty-one million, two hundred thirty-one thousand, two hundred seventy-six".