1306304231 has 4 divisors (see below), whose sum is σ = 1313602200. Its totient is φ = 1299006264.

The previous prime is 1306304189. The next prime is 1306304249. The reversal of 1306304231 is 1324036031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1324036031 = 33203 ⋅39877.

It is a cyclic number.

It is not a de Polignac number, because 1306304231 - 2²² = 1302109927 is a prime.

It is a super-2 number, since 2×1306304231² = 3412861487857002722, 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 = 1306304197 and 1306304206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306394231) 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, 3648716 + ... + 3649073.

It is an arithmetic number, because the mean of its divisors is an integer number (328400550).

Almost surely, 2^1306304231 is an apocalyptic number.

1306304231 is a deficient number, since it is larger than the sum of its proper divisors (7297969).

1306304231 is an equidigital number, since it uses as much as digits as its factorization.

1306304231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297968.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1306304231 is about 36142.8309765574. The cubic root of 1306304231 is about 1093.1542422326.

The spelling of 1306304231 in words is "one billion, three hundred six million, three hundred four thousand, two hundred thirty-one".