131024121 has 4 divisors (see below), whose sum is σ = 174698832. Its totient is φ = 87349412.

The previous prime is 131024119. The next prime is 131024149. The reversal of 131024121 is 121420131.

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 131024121 - 2¹ = 131024119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131024121.

It is not an unprimeable number, because it can be changed into a prime (131024111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21837351 + ... + 21837356.

It is an arithmetic number, because the mean of its divisors is an integer number (43674708).

Almost surely, 2^131024121 is an apocalyptic number.

It is an amenable number.

131024121 is a deficient number, since it is larger than the sum of its proper divisors (43674711).

131024121 is an equidigital number, since it uses as much as digits as its factorization.

131024121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43674710.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 131024121 is about 11446.5768245358. The cubic root of 131024121 is about 507.9064775550.

Adding to 131024121 its reverse (121420131), we get a palindrome (252444252).

The spelling of 131024121 in words is "one hundred thirty-one million, twenty-four thousand, one hundred twenty-one".