1312400433420 has 48 divisors (see below), whose sum is σ = 4083023572320. Its totient is φ = 349973448768.

The previous prime is 1312400433403. The next prime is 1312400433433. The reversal of 1312400433420 is 243340042131.

1312400433420 is a `hidden beast` number, since 1 + 312 + 4 + 0 + 0 + 4 + 3 + 342 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 1215185047 + ... + 1215186126.

It is an arithmetic number, because the mean of its divisors is an integer number (85062991090).

Almost surely, 2^{1312400433420} is an apocalyptic number.

1312400433420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312400433420 is an abundant number, since it is smaller than the sum of its proper divisors (2770623138900).

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

1312400433420 is a wasteful number, since it uses less digits than its factorization.

1312400433420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430371191 (or 2430371183 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 1312400433420 its reverse (243340042131), we get a palindrome (1555740475551).

The spelling of 1312400433420 in words is "one trillion, three hundred twelve billion, four hundred million, four hundred thirty-three thousand, four hundred twenty".