30231232120013 has 4 divisors (see below), whose sum is σ = 30231289904028. Its totient is φ = 30231174336000.

The previous prime is 30231232119973. The next prime is 30231232120027. The reversal of 30231232120013 is 31002123213203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8073707396329 + 22157524723684 = 2841427^2 + 4707178^2 .

It is a cyclic number.

It is not a de Polignac number, because 30231232120013 - 2²⁸ = 30230963684557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231232420013) 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, 28100006 + ... + 29156007.

It is an arithmetic number, because the mean of its divisors is an integer number (7557822476007).

Almost surely, 2^{30231232120013} is an apocalyptic number.

It is an amenable number.

30231232120013 is a deficient number, since it is larger than the sum of its proper divisors (57784015).

30231232120013 is an equidigital number, since it uses as much as digits as its factorization.

30231232120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57784014.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 30231232120013 its reverse (31002123213203), we get a palindrome (61233355333216).

The spelling of 30231232120013 in words is "thirty trillion, two hundred thirty-one billion, two hundred thirty-two million, one hundred twenty thousand, thirteen".