131032213121 has 4 divisors (see below), whose sum is σ = 131046283200. Its totient is φ = 131018143044.

The previous prime is 131032213093. The next prime is 131032213139. The reversal of 131032213121 is 121312230131.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-131032213121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131032213093 and 131032213102.

It is not an unprimeable number, because it can be changed into a prime (131032213021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7021061 + ... + 7039698.

It is an arithmetic number, because the mean of its divisors is an integer number (32761570800).

Almost surely, 2^131032213121 is an apocalyptic number.

It is an amenable number.

131032213121 is a deficient number, since it is larger than the sum of its proper divisors (14070079).

131032213121 is an equidigital number, since it uses as much as digits as its factorization.

131032213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14070078.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131032213121 its reverse (121312230131), we get a palindrome (252344443252).

The spelling of 131032213121 in words is "one hundred thirty-one billion, thirty-two million, two hundred thirteen thousand, one hundred twenty-one".