131552121 has 4 divisors (see below), whose sum is σ = 175402832. Its totient is φ = 87701412.

The previous prime is 131552101. The next prime is 131552129. The reversal of 131552121 is 121255131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131552121 - 2⁷ = 131551993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131552129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21925351 + ... + 21925356.

It is an arithmetic number, because the mean of its divisors is an integer number (43850708).

Almost surely, 2^131552121 is an apocalyptic number.

It is an amenable number.

131552121 is a deficient number, since it is larger than the sum of its proper divisors (43850711).

131552121 is an equidigital number, since it uses as much as digits as its factorization.

131552121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43850710.

The product of its digits is 300, while the sum is 21.

The square root of 131552121 is about 11469.6172996312. The cubic root of 131552121 is about 508.5878157011.

The spelling of 131552121 in words is "one hundred thirty-one million, five hundred fifty-two thousand, one hundred twenty-one".