1312204420240 has 80 divisors (see below), whose sum is σ = 3487002674688. Its totient is φ = 449861488128.

The previous prime is 1312204420211. The next prime is 1312204420283. The reversal of 1312204420240 is 420244022131.

It is a tau number, because it is divible by the number of its divisors (80).

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, 7174569 + ... + 7355191.

Almost surely, 2^{1312204420240} is an apocalyptic number.

1312204420240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312204420240 is an abundant number, since it is smaller than the sum of its proper divisors (2174798254448).

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

1312204420240 is a wasteful number, since it uses less digits than its factorization.

1312204420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193616 (or 193610 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1312204420240 its reverse (420244022131), we get a palindrome (1732448442371).

The spelling of 1312204420240 in words is "one trillion, three hundred twelve billion, two hundred four million, four hundred twenty thousand, two hundred forty".