1304400003312 has 80 divisors (see below), whose sum is σ = 3854145818880. Its totient is φ = 372389577216.

The previous prime is 1304400003289. The next prime is 1304400003373. The reversal of 1304400003312 is 2133000044031.

It is a super-2 number, since 2×1304400003312² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1118733 + ... + 1964780.

It is an arithmetic number, because the mean of its divisors is an integer number (48176822736).

Almost surely, 2^{1304400003312} is an apocalyptic number.

1304400003312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1304400003312 is an abundant number, since it is smaller than the sum of its proper divisors (2549745815568).

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

1304400003312 is a wasteful number, since it uses less digits than its factorization.

1304400003312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084790 (or 3084784 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1304400003312 its reverse (2133000044031), we get a palindrome (3437400047343).

The spelling of 1304400003312 in words is "one trillion, three hundred four billion, four hundred million, three thousand, three hundred twelve".