13431550388 has 12 divisors (see below), whose sum is σ = 23507037792. Its totient is φ = 6715253880.

The previous prime is 13431550381. The next prime is 13431550409. The reversal of 13431550388 is 88305513431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431550381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69170 + ... + 177897.

It is an arithmetic number, because the mean of its divisors is an integer number (1958919816).

Almost surely, 2^13431550388 is an apocalyptic number.

It is an amenable number.

13431550388 is a deficient number, since it is larger than the sum of its proper divisors (10075487404).

13431550388 is a wasteful number, since it uses less digits than its factorization.

13431550388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260662 (or 260660 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 13431550388 in words is "thirteen billion, four hundred thirty-one million, five hundred fifty thousand, three hundred eighty-eight".