13031303240 has 32 divisors (see below), whose sum is σ = 29364984000. Its totient is φ = 5204601024.

The previous prime is 13031303191. The next prime is 13031303261. The reversal of 13031303240 is 4230313031.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 220820 + ... + 273539.

It is an arithmetic number, because the mean of its divisors is an integer number (917655750).

Almost surely, 2^13031303240 is an apocalyptic number.

13031303240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13031303240 is an abundant number, since it is smaller than the sum of its proper divisors (16333680760).

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

13031303240 is a wasteful number, since it uses less digits than its factorization.

13031303240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495029 (or 495025 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13031303240 its reverse (4230313031), we get a palindrome (17261616271).

The spelling of 13031303240 in words is "thirteen billion, thirty-one million, three hundred three thousand, two hundred forty".