1312013304 has 96 divisors (see below), whose sum is σ = 4137700320. Its totient is φ = 367780608.

The previous prime is 1312013293. The next prime is 1312013321. The reversal of 1312013304 is 4033102131.

1312013304 is a `hidden beast` number, since 131 + 201 + 330 + 4 = 666.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2154 + ... + 51270.

It is an arithmetic number, because the mean of its divisors is an integer number (43101045).

Almost surely, 2^1312013304 is an apocalyptic number.

1312013304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312013304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2068850160).

1312013304 is an abundant number, since it is smaller than the sum of its proper divisors (2825687016).

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

1312013304 is a wasteful number, since it uses less digits than its factorization.

1312013304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49189 (or 49182 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1312013304 is about 36221.7241997120. The cubic root of 1312013304 is about 1094.7444352599.

Adding to 1312013304 its reverse (4033102131), we get a palindrome (5345115435).

The spelling of 1312013304 in words is "one billion, three hundred twelve million, thirteen thousand, three hundred four".