1304231400 has 72 divisors (see below), whose sum is σ = 4380049830. Its totient is φ = 347794560.

The previous prime is 1304231393. The next prime is 1304231431. The reversal of 1304231400 is 41324031.

1304231400 is a `hidden beast` number, since 1 + 30 + 4 + 231 + 400 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1203951204 + 100280196 = 34698^2 + 10014^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 360487 + ... + 364086.

Almost surely, 2^1304231400 is an apocalyptic number.

1304231400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304231400 is an abundant number, since it is smaller than the sum of its proper divisors (3075818430).

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

1304231400 is a wasteful number, since it uses less digits than its factorization.

1304231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724595 (or 724583 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1304231400 is about 36114.1440435738. The cubic root of 1304231400 is about 1092.5757339187.

Adding to 1304231400 its reverse (41324031), we get a palindrome (1345555431).

The spelling of 1304231400 in words is "one billion, three hundred four million, two hundred thirty-one thousand, four hundred".