23400434112 has 112 divisors (see below), whose sum is σ = 67583620992. Its totient is φ = 7086689280.

The previous prime is 23400434087. The next prime is 23400434131. The reversal of 23400434112 is 21143400432.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5715138 + ... + 5719230.

Almost surely, 2^23400434112 is an apocalyptic number.

23400434112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23400434112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33791810496).

23400434112 is an abundant number, since it is smaller than the sum of its proper divisors (44183186880).

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

23400434112 is a wasteful number, since it uses less digits than its factorization.

23400434112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826 (or 6816 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 23400434112 its reverse (21143400432), we get a palindrome (44543834544).

The spelling of 23400434112 in words is "twenty-three billion, four hundred million, four hundred thirty-four thousand, one hundred twelve".