1200400034312 has 32 divisors (see below), whose sum is σ = 2325473349120. Its totient is φ = 580309115520.

The previous prime is 1200400034311. The next prime is 1200400034329. The reversal of 1200400034312 is 2134300040021.

It is not an unprimeable number, because it can be changed into a prime (1200400034311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1934108 + ... + 2478219.

It is an arithmetic number, because the mean of its divisors is an integer number (72671042160).

Almost surely, 2^{1200400034312} is an apocalyptic number.

It is an amenable number.

1200400034312 is a deficient number, since it is larger than the sum of its proper divisors (1125073314808).

1200400034312 is a wasteful number, since it uses less digits than its factorization.

1200400034312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413461 (or 4413457 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1200400034312 its reverse (2134300040021), we get a palindrome (3334700074333).

The spelling of 1200400034312 in words is "one trillion, two hundred billion, four hundred million, thirty-four thousand, three hundred twelve".