12013223431 has 8 divisors (see below), whose sum is σ = 13225568400. Its totient is φ = 10820917440.

The previous prime is 12013223419. The next prime is 12013223473. The reversal of 12013223431 is 13432231021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12013223431 - 2⁵ = 12013223399 is a prime.

It is a super-2 number, since 2×12013223431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013223231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5008486 + ... + 5010883.

It is an arithmetic number, because the mean of its divisors is an integer number (1653196050).

Almost surely, 2^12013223431 is an apocalyptic number.

12013223431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12013223431 is a deficient number, since it is larger than the sum of its proper divisors (1212344969).

12013223431 is a wasteful number, since it uses less digits than its factorization.

12013223431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10019489.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12013223431 its reverse (13432231021), we get a palindrome (25445454452).

The spelling of 12013223431 in words is "twelve billion, thirteen million, two hundred twenty-three thousand, four hundred thirty-one".