13123223400 has 96 divisors (see below), whose sum is σ = 46493720640. Its totient is φ = 2999592960.

The previous prime is 13123223371. The next prime is 13123223401. The reversal of 13123223400 is 432232131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13123223401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1558089 + ... + 1566488.

It is an arithmetic number, because the mean of its divisors is an integer number (484309590).

Almost surely, 2^13123223400 is an apocalyptic number.

13123223400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123223400 is an abundant number, since it is smaller than the sum of its proper divisors (33370497240).

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

13123223400 is a wasteful number, since it uses less digits than its factorization.

13123223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124603 (or 3124594 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13123223400 its reverse (432232131), we get a palindrome (13555455531).

The spelling of 13123223400 in words is "thirteen billion, one hundred twenty-three million, two hundred twenty-three thousand, four hundred".