1201400312 has 32 divisors (see below), whose sum is σ = 2576402400. Its totient is φ = 514491264.

The previous prime is 1201400309. The next prime is 1201400329. The reversal of 1201400312 is 2130041021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72518 + ... + 87530.

It is an arithmetic number, because the mean of its divisors is an integer number (80512575).

Almost surely, 2^1201400312 is an apocalyptic number.

It is an amenable number.

1201400312 is an abundant number, since it is smaller than the sum of its proper divisors (1375002088).

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

1201400312 is a wasteful number, since it uses less digits than its factorization.

1201400312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16455 (or 16451 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1201400312 is about 34661.2220211579. Note that the first 3 decimals coincide. The cubic root of 1201400312 is about 1063.0717567117.

Adding to 1201400312 its reverse (2130041021), we get a palindrome (3331441333).

The spelling of 1201400312 in words is "one billion, two hundred one million, four hundred thousand, three hundred twelve".