30231231321 has 4 divisors (see below), whose sum is σ = 40308308432. Its totient is φ = 20154154212.

The previous prime is 30231231311. The next prime is 30231231353. The reversal of 30231231321 is 12313213203.

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 not a de Polignac number, because 30231231321 - 2¹⁰ = 30231230297 is a prime.

It is a super-2 number, since 2×30231231321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30231231301) 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, 5038538551 + ... + 5038538556.

It is an arithmetic number, because the mean of its divisors is an integer number (10077077108).

Almost surely, 2^30231231321 is an apocalyptic number.

It is an amenable number.

30231231321 is a deficient number, since it is larger than the sum of its proper divisors (10077077111).

30231231321 is a wasteful number, since it uses less digits than its factorization.

30231231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10077077110.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30231231321 its reverse (12313213203), we get a palindrome (42544444524).

The spelling of 30231231321 in words is "thirty billion, two hundred thirty-one million, two hundred thirty-one thousand, three hundred twenty-one".