13431554040 has 64 divisors (see below), whose sum is σ = 40302295200. Its totient is φ = 3581069312.

The previous prime is 13431554033. The next prime is 13431554041. The reversal of 13431554040 is 4045513431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13431553989 and 13431554007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431554041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1185844 + ... + 1197116.

Almost surely, 2^13431554040 is an apocalyptic number.

13431554040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13431554040 is an abundant number, since it is smaller than the sum of its proper divisors (26870741160).

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

13431554040 is a wasteful number, since it uses less digits than its factorization.

13431554040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21216 (or 21212 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 13431554040 in words is "thirteen billion, four hundred thirty-one million, five hundred fifty-four thousand, forty".