131332121 has 8 divisors (see below), whose sum is σ = 133319520. Its totient is φ = 129359008.

The previous prime is 131332111. The next prime is 131332133. The reversal of 131332121 is 121233131.

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 131332121 - 2²² = 127137817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131332121.

It is not an unprimeable number, because it can be changed into a prime (131332111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15725 + ... + 22581.

It is an arithmetic number, because the mean of its divisors is an integer number (16664940).

Almost surely, 2^131332121 is an apocalyptic number.

It is an amenable number.

131332121 is a deficient number, since it is larger than the sum of its proper divisors (1987399).

131332121 is a wasteful number, since it uses less digits than its factorization.

131332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143.

The product of its digits is 108, while the sum is 17.

The square root of 131332121 is about 11460.0227312165. The cubic root of 131332121 is about 508.3041467670.

Adding to 131332121 its reverse (121233131), we get a palindrome (252565252).

The spelling of 131332121 in words is "one hundred thirty-one million, three hundred thirty-two thousand, one hundred twenty-one".