130312021321 has 4 divisors (see below), whose sum is σ = 134515634944. Its totient is φ = 126108407700.

The previous prime is 130312021309. The next prime is 130312021349. The reversal of 130312021321 is 123120213031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123120213031 = 59051 ⋅2084981.

It is a cyclic number.

It is not a de Polignac number, because 130312021321 - 2¹⁵ = 130311988553 is a prime.

It is a super-3 number, since 3×130312021321³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130312021361) 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, 2101806765 + ... + 2101806826.

It is an arithmetic number, because the mean of its divisors is an integer number (33628908736).

Almost surely, 2^130312021321 is an apocalyptic number.

It is an amenable number.

130312021321 is a deficient number, since it is larger than the sum of its proper divisors (4203613623).

130312021321 is an equidigital number, since it uses as much as digits as its factorization.

130312021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203613622.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 130312021321 its reverse (123120213031), we get a palindrome (253432234352).

The spelling of 130312021321 in words is "one hundred thirty billion, three hundred twelve million, twenty-one thousand, three hundred twenty-one".