131554121 has 8 divisors (see below), whose sum is σ = 136382400. Its totient is φ = 126745360.

The previous prime is 131554099. The next prime is 131554123. The reversal of 131554121 is 121455131.

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

It is a cyclic number.

It is not a de Polignac number, because 131554121 - 2⁶ = 131554057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131554123) by changing a digit.

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, 9620 + ... + 18858.

It is an arithmetic number, because the mean of its divisors is an integer number (17047800).

Almost surely, 2^131554121 is an apocalyptic number.

It is an amenable number.

131554121 is a deficient number, since it is larger than the sum of its proper divisors (4828279).

131554121 is an equidigital number, since it uses as much as digits as its factorization.

131554121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9759.

The product of its digits is 600, while the sum is 23.

The square root of 131554121 is about 11469.7044861670. The cubic root of 131554121 is about 508.5903930585.

The spelling of 131554121 in words is "one hundred thirty-one million, five hundred fifty-four thousand, one hundred twenty-one".