12113431002 has 24 divisors (see below), whose sum is σ = 26279750484. Its totient is φ = 4032582144.

The previous prime is 12113430997. The next prime is 12113431013. The reversal of 12113431002 is 20013431121.

It can be written as a sum of positive squares in 2 ways, for example, as 12106820961 + 6610041 = 110031^2 + 2571^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421383 + ... + 449210.

Almost surely, 2^12113431002 is an apocalyptic number.

12113431002 is an abundant number, since it is smaller than the sum of its proper divisors (14166319482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12113431002 is a wasteful number, since it uses less digits than its factorization.

12113431002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871374 (or 871371 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12113431002 its reverse (20013431121), we get a palindrome (32126862123).

The spelling of 12113431002 in words is "twelve billion, one hundred thirteen million, four hundred thirty-one thousand, two".