131554523 has 4 divisors (see below), whose sum is σ = 132558888. Its totient is φ = 130550160.

The previous prime is 131554519. The next prime is 131554543. The reversal of 131554523 is 325455131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131554523 - 2² = 131554519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131554543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501986 + ... + 502247.

It is an arithmetic number, because the mean of its divisors is an integer number (33139722).

Almost surely, 2^131554523 is an apocalyptic number.

131554523 is a deficient number, since it is larger than the sum of its proper divisors (1004365).

131554523 is a wasteful number, since it uses less digits than its factorization.

131554523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004364.

The product of its digits is 9000, while the sum is 29.

The square root of 131554523 is about 11469.7220105807. The cubic root of 131554523 is about 508.5909111042.

The spelling of 131554523 in words is "one hundred thirty-one million, five hundred fifty-four thousand, five hundred twenty-three".