30120013231 has 16 divisors (see below), whose sum is σ = 37612949760. Its totient is φ = 23432186880.

The previous prime is 30120013223. The next prime is 30120013237. The reversal of 30120013231 is 13231002103.

It is a cyclic number.

It is not a de Polignac number, because 30120013231 - 2³ = 30120013223 is a prime.

It is a super-2 number, since 2×30120013231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120013237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268306 + ... + 363631.

It is an arithmetic number, because the mean of its divisors is an integer number (2350809360).

Almost surely, 2^30120013231 is an apocalyptic number.

30120013231 is a deficient number, since it is larger than the sum of its proper divisors (7492936529).

30120013231 is a wasteful number, since it uses less digits than its factorization.

30120013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632574.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30120013231 its reverse (13231002103), we get a palindrome (43351015334).

The spelling of 30120013231 in words is "thirty billion, one hundred twenty million, thirteen thousand, two hundred thirty-one".