13431144302 has 4 divisors (see below), whose sum is σ = 20146716456. Its totient is φ = 6715572150.

The previous prime is 13431144281. The next prime is 13431144343. The reversal of 13431144302 is 20344113431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×13431144302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3357786074 + ... + 3357786077.

It is an arithmetic number, because the mean of its divisors is an integer number (5036679114).

Almost surely, 2^13431144302 is an apocalyptic number.

13431144302 is a deficient number, since it is larger than the sum of its proper divisors (6715572154).

13431144302 is an equidigital number, since it uses as much as digits as its factorization.

13431144302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715572153.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 13431144302 its reverse (20344113431), we get a palindrome (33775257733).

The spelling of 13431144302 in words is "thirteen billion, four hundred thirty-one million, one hundred forty-four thousand, three hundred two".