10430621321 has 4 divisors (see below), whose sum is σ = 10431059712. Its totient is φ = 10430182932.

The previous prime is 10430621317. The next prime is 10430621323. The reversal of 10430621321 is 12312603401.

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 10430621321 - 2² = 10430621317 is a prime.

It is a super-2 number, since 2×10430621321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10430621323) 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, 181325 + ... + 231818.

It is an arithmetic number, because the mean of its divisors is an integer number (2607764928).

Almost surely, 2^10430621321 is an apocalyptic number.

It is an amenable number.

10430621321 is a deficient number, since it is larger than the sum of its proper divisors (438391).

10430621321 is an equidigital number, since it uses as much as digits as its factorization.

10430621321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438390.

The product of its (nonzero) digits is 864, while the sum is 23.

The spelling of 10430621321 in words is "ten billion, four hundred thirty million, six hundred twenty-one thousand, three hundred twenty-one".