130431121 has 4 divisors (see below), whose sum is σ = 130542192. Its totient is φ = 130320052.

The previous prime is 130431107. The next prime is 130431131. The reversal of 130431121 is 121134031.

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 a cyclic number.

It is not a de Polignac number, because 130431121 - 2¹⁵ = 130398353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130431095 and 130431104.

It is not an unprimeable number, because it can be changed into a prime (130431131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53755 + ... + 56128.

It is an arithmetic number, because the mean of its divisors is an integer number (32635548).

Almost surely, 2^130431121 is an apocalyptic number.

It is an amenable number.

130431121 is a deficient number, since it is larger than the sum of its proper divisors (111071).

130431121 is a wasteful number, since it uses less digits than its factorization.

130431121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111070.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 130431121 is about 11420.6445089583. The cubic root of 130431121 is about 507.1390766970.

Adding to 130431121 its reverse (121134031), we get a palindrome (251565152).

The spelling of 130431121 in words is "one hundred thirty million, four hundred thirty-one thousand, one hundred twenty-one".