13123204431340 has 48 divisors (see below), whose sum is σ = 28079372170080. Its totient is φ = 5150116408320.

The previous prime is 13123204431313. The next prime is 13123204431371. The reversal of 13123204431340 is 4313440232131.

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, 53863195 + ... + 54106285.

It is an arithmetic number, because the mean of its divisors is an integer number (584986920210).

Almost surely, 2^{13123204431340} is an apocalyptic number.

13123204431340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123204431340 is an abundant number, since it is smaller than the sum of its proper divisors (14956167738740).

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

13123204431340 is a wasteful number, since it uses less digits than its factorization.

13123204431340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294082 (or 294080 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 13123204431340 its reverse (4313440232131), we get a palindrome (17436644663471).

The spelling of 13123204431340 in words is "thirteen trillion, one hundred twenty-three billion, two hundred four million, four hundred thirty-one thousand, three hundred forty".