13123430140 has 24 divisors (see below), whose sum is σ = 27561371040. Its totient is φ = 5248959168.

The previous prime is 13123430057. The next prime is 13123430141. The reversal of 13123430140 is 4103432131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123430141) 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, 439114 + ... + 468046.

It is an arithmetic number, because the mean of its divisors is an integer number (1148390460).

Almost surely, 2^13123430140 is an apocalyptic number.

13123430140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123430140 is an abundant number, since it is smaller than the sum of its proper divisors (14437940900).

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

13123430140 is a wasteful number, since it uses less digits than its factorization.

13123430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51621 (or 51619 counting only the distinct ones).

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

Adding to 13123430140 its reverse (4103432131), we get a palindrome (17226862271).

The spelling of 13123430140 in words is "thirteen billion, one hundred twenty-three million, four hundred thirty thousand, one hundred forty".