131143121 has 8 divisors (see below), whose sum is σ = 132787200. Its totient is φ = 129508848.

The previous prime is 131143093. The next prime is 131143123. The reversal of 131143121 is 121341131.

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 131143121 - 2²² = 126948817 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 131143121.

It is not an unprimeable number, because it can be changed into a prime (131143123) 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, 26555 + ... + 31103.

It is an arithmetic number, because the mean of its divisors is an integer number (16598400).

Almost surely, 2^131143121 is an apocalyptic number.

It is an amenable number.

131143121 is a deficient number, since it is larger than the sum of its proper divisors (1644079).

131143121 is a wasteful number, since it uses less digits than its factorization.

131143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903.

The product of its digits is 72, while the sum is 17.

The square root of 131143121 is about 11451.7737054135. The cubic root of 131143121 is about 508.0601962787.

Adding to 131143121 its reverse (121341131), we get a palindrome (252484252).

The spelling of 131143121 in words is "one hundred thirty-one million, one hundred forty-three thousand, one hundred twenty-one".