131605454 has 8 divisors (see below), whose sum is σ = 198511560. Its totient is φ = 65434936.

The previous prime is 131605433. The next prime is 131605477. The reversal of 131605454 is 454506131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×131605454² = 34639991045092232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183449 + ... + 184164.

It is an arithmetic number, because the mean of its divisors is an integer number (24813945).

Almost surely, 2^131605454 is an apocalyptic number.

131605454 is a deficient number, since it is larger than the sum of its proper divisors (66906106).

131605454 is a wasteful number, since it uses less digits than its factorization.

131605454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367794.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 131605454 is about 11471.9420326290. The cubic root of 131605454 is about 508.6565358633.

The spelling of 131605454 in words is "one hundred thirty-one million, six hundred five thousand, four hundred fifty-four".