131303121 has 32 divisors (see below), whose sum is σ = 192067200. Its totient is φ = 79451136.

The previous prime is 131303119. The next prime is 131303147. The reversal of 131303121 is 121303131.

It is not a de Polignac number, because 131303121 - 2¹ = 131303119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131303121.

It is not an unprimeable number, because it can be changed into a prime (131303621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280930 + ... + 281396.

It is an arithmetic number, because the mean of its divisors is an integer number (6002100).

Almost surely, 2^131303121 is an apocalyptic number.

It is an amenable number.

131303121 is a deficient number, since it is larger than the sum of its proper divisors (60764079).

131303121 is a wasteful number, since it uses less digits than its factorization.

131303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131303121 is about 11458.7573933651. The cubic root of 131303121 is about 508.2667304181.

Adding to 131303121 its reverse (121303131), we get a palindrome (252606252).

The spelling of 131303121 in words is "one hundred thirty-one million, three hundred three thousand, one hundred twenty-one".