1312404147 has 16 divisors (see below), whose sum is σ = 1970939680. Its totient is φ = 862949376.

The previous prime is 1312404133. The next prime is 1312404151. The reversal of 1312404147 is 7414042131.

1312404147 is a `hidden beast` number, since 1 + 3 + 1 + 240 + 414 + 7 = 666.

It is not a de Polignac number, because 1312404147 - 2¹⁶ = 1312338611 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312404147.

It is not an unprimeable number, because it can be changed into a prime (1312404187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330958 + ... + 334899.

It is an arithmetic number, because the mean of its divisors is an integer number (123183730).

Almost surely, 2^1312404147 is an apocalyptic number.

1312404147 is a deficient number, since it is larger than the sum of its proper divisors (658535533).

1312404147 is an equidigital number, since it uses as much as digits as its factorization.

1312404147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665939 (or 665933 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1312404147 is about 36227.1189442384. The cubic root of 1312404147 is about 1094.8531309867.

Adding to 1312404147 its reverse (7414042131), we get a palindrome (8726446278).

The spelling of 1312404147 in words is "one billion, three hundred twelve million, four hundred four thousand, one hundred forty-seven".