1304441231 has 4 divisors (see below), whose sum is σ = 1305195672. Its totient is φ = 1303686792.

The previous prime is 1304441221. The next prime is 1304441233. The reversal of 1304441231 is 1321444031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321444031 = 1901 ⋅695131.

It is a cyclic number.

It is not a de Polignac number, because 1304441231 - 2¹⁸ = 1304179087 is a prime.

It is a super-2 number, since 2×1304441231² = 3403133850265590722, 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 = 1304441197 and 1304441206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304441233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374621 + ... + 378086.

It is an arithmetic number, because the mean of its divisors is an integer number (326298918).

Almost surely, 2^1304441231 is an apocalyptic number.

1304441231 is a deficient number, since it is larger than the sum of its proper divisors (754441).

1304441231 is an equidigital number, since it uses as much as digits as its factorization.

1304441231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754440.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1304441231 is about 36117.0490350471. The cubic root of 1304441231 is about 1092.6343237174.

Adding to 1304441231 its reverse (1321444031), we get a palindrome (2625885262).

The spelling of 1304441231 in words is "one billion, three hundred four million, four hundred forty-one thousand, two hundred thirty-one".