1312401204 has 96 divisors (see below), whose sum is σ = 3494695680. Its totient is φ = 431101440.

The previous prime is 1312401191. The next prime is 1312401217. The reversal of 1312401204 is 4021042131.

1312401204 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1312401191) and next prime (1312401217).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 620052 + ... + 622164.

It is an arithmetic number, because the mean of its divisors is an integer number (36403080).

Almost surely, 2^1312401204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312401204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747347840).

1312401204 is an abundant number, since it is smaller than the sum of its proper divisors (2182294476).

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

1312401204 is an equidigital number, since it uses as much as digits as its factorization.

1312401204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1312401204 is about 36227.0783254736. The cubic root of 1312401204 is about 1094.8523126018.

Adding to 1312401204 its reverse (4021042131), we get a palindrome (5333443335).

The spelling of 1312401204 in words is "one billion, three hundred twelve million, four hundred one thousand, two hundred four".