1304533231 has 8 divisors (see below), whose sum is σ = 1308816000. Its totient is φ = 1300258008.

The previous prime is 1304533201. The next prime is 1304533249. The reversal of 1304533231 is 1323354031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304533231 - 2²³ = 1296144623 is a prime.

It is a super-2 number, since 2×1304533231² = 3403613901566598722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1304533196 and 1304533205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304533201) 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 7 ways as a sum of consecutive naturals, for example, 729120 + ... + 730906.

It is an arithmetic number, because the mean of its divisors is an integer number (163602000).

Almost surely, 2^1304533231 is an apocalyptic number.

1304533231 is a deficient number, since it is larger than the sum of its proper divisors (4282769).

1304533231 is a wasteful number, since it uses less digits than its factorization.

1304533231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 1304533231 is about 36118.3226493147. The cubic root of 1304533231 is about 1092.6600103210.

Adding to 1304533231 its reverse (1323354031), we get a palindrome (2627887262).

The spelling of 1304533231 in words is "one billion, three hundred four million, five hundred thirty-three thousand, two hundred thirty-one".