131256454 has 16 divisors (see below), whose sum is σ = 225193248. Its totient is φ = 56207232.

The previous prime is 131256443. The next prime is 131256467. The reversal of 131256454 is 454652131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18724 + ... + 24760.

It is an arithmetic number, because the mean of its divisors is an integer number (14074578).

Almost surely, 2^131256454 is an apocalyptic number.

131256454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131256454 is a deficient number, since it is larger than the sum of its proper divisors (93936794).

131256454 is a wasteful number, since it uses less digits than its factorization.

131256454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7599.

The product of its digits is 14400, while the sum is 31.

The square root of 131256454 is about 11456.7209095797. The cubic root of 131256454 is about 508.2065082037.

The spelling of 131256454 in words is "one hundred thirty-one million, two hundred fifty-six thousand, four hundred fifty-four".