23403120312312 has 144 divisors (see below), whose sum is σ = 68769010276200. Its totient is φ = 7186810924800.

The previous prime is 23403120312283. The next prime is 23403120312331. The reversal of 23403120312312 is 21321302130432.

23403120312312 is a `hidden beast` number, since 2 + 3 + 4 + 0 + 31 + 2 + 0 + 312 + 312 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4304187 + ... + 8082837.

Almost surely, 2^{23403120312312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23403120312312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34384505138100).

23403120312312 is an abundant number, since it is smaller than the sum of its proper divisors (45365889963888).

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

23403120312312 is a wasteful number, since it uses less digits than its factorization.

23403120312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779198 (or 3779178 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 23403120312312 its reverse (21321302130432), we get a palindrome (44724422442744).

The spelling of 23403120312312 in words is "twenty-three trillion, four hundred three billion, one hundred twenty million, three hundred twelve thousand, three hundred twelve".