13431433444 has 24 divisors (see below), whose sum is σ = 27614276928. Its totient is φ = 5635566240.

The previous prime is 13431433427. The next prime is 13431433451. The reversal of 13431433444 is 44433413431.

It is a super-2 number, since 2×13431433444² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11740192 + ... + 11741335.

It is an arithmetic number, because the mean of its divisors is an integer number (1150594872).

Almost surely, 2^13431433444 is an apocalyptic number.

It is an amenable number.

13431433444 is an abundant number, since it is smaller than the sum of its proper divisors (14182843484).

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

13431433444 is a wasteful number, since it uses less digits than its factorization.

13431433444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23481555 (or 23481553 counting only the distinct ones).

The product of its digits is 82944, while the sum is 34.

Adding to 13431433444 its reverse (44433413431), we get a palindrome (57864846875).

The spelling of 13431433444 in words is "thirteen billion, four hundred thirty-one million, four hundred thirty-three thousand, four hundred forty-four".