130311312221 has 4 divisors (see below), whose sum is σ = 135977021472. Its totient is φ = 124645602972.

The previous prime is 130311312203. The next prime is 130311312259. The reversal of 130311312221 is 122213113031.

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 not a de Polignac number, because 130311312221 - 2²² = 130307117917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130311312193 and 130311312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130311312121) 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, 2832854591 + ... + 2832854636.

It is an arithmetic number, because the mean of its divisors is an integer number (33994255368).

Almost surely, 2^130311312221 is an apocalyptic number.

It is an amenable number.

130311312221 is a deficient number, since it is larger than the sum of its proper divisors (5665709251).

130311312221 is an equidigital number, since it uses as much as digits as its factorization.

130311312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665709250.

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

Adding to 130311312221 its reverse (122213113031), we get a palindrome (252524425252).

The spelling of 130311312221 in words is "one hundred thirty billion, three hundred eleven million, three hundred twelve thousand, two hundred twenty-one".