12010013231 has 4 divisors (see below), whose sum is σ = 12026178192. Its totient is φ = 11993848272.

The previous prime is 12010013227. The next prime is 12010013251. The reversal of 12010013231 is 13231001021.

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

It is a cyclic number.

It is not a de Polignac number, because 12010013231 - 2² = 12010013227 is a prime.

It is a super-2 number, since 2×12010013231² (a number of 21 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 (12010013251) 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, 8081366 + ... + 8082851.

It is an arithmetic number, because the mean of its divisors is an integer number (3006544548).

Almost surely, 2^12010013231 is an apocalyptic number.

12010013231 is a deficient number, since it is larger than the sum of its proper divisors (16164961).

12010013231 is an equidigital number, since it uses as much as digits as its factorization.

12010013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16164960.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12010013231 its reverse (13231001021), we get a palindrome (25241014252).

It can be divided in two parts, 120100 and 13231, that added together give a palindrome (133331).

The spelling of 12010013231 in words is "twelve billion, ten million, thirteen thousand, two hundred thirty-one".