131131454 has 4 divisors (see below), whose sum is σ = 196697184. Its totient is φ = 65565726.

The previous prime is 131131447. The next prime is 131131471. The reversal of 131131454 is 454131131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454131131 = 1543 ⋅294317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32782862 + ... + 32782865.

It is an arithmetic number, because the mean of its divisors is an integer number (49174296).

Almost surely, 2^131131454 is an apocalyptic number.

131131454 is a deficient number, since it is larger than the sum of its proper divisors (65565730).

131131454 is an equidigital number, since it uses as much as digits as its factorization.

131131454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65565729.

The product of its digits is 720, while the sum is 23.

The square root of 131131454 is about 11451.2642970111. The cubic root of 131131454 is about 508.0451294976.

Adding to 131131454 its reverse (454131131), we get a palindrome (585262585).

The spelling of 131131454 in words is "one hundred thirty-one million, one hundred thirty-one thousand, four hundred fifty-four".