131445454 has 16 divisors (see below), whose sum is σ = 225957888. Its totient is φ = 56178072.

The previous prime is 131445421. The next prime is 131445463. The reversal of 131445454 is 454544131.

It is a super-2 number, since 2×131445454² = 34555814754532232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7654 + ... + 17929.

It is an arithmetic number, because the mean of its divisors is an integer number (14122368).

Almost surely, 2^131445454 is an apocalyptic number.

131445454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131445454 is a deficient number, since it is larger than the sum of its proper divisors (94512434).

131445454 is a wasteful number, since it uses less digits than its factorization.

131445454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25959.

The product of its digits is 19200, while the sum is 31.

The square root of 131445454 is about 11464.9663758774. The cubic root of 131445454 is about 508.4503183472.

Adding to 131445454 its reverse (454544131), we get a palindrome (585989585).

The spelling of 131445454 in words is "one hundred thirty-one million, four hundred forty-five thousand, four hundred fifty-four".