1302313231 has 2 divisors, whose sum is σ = 1302313232. Its totient is φ = 1302313230.

The previous prime is 1302313223. The next prime is 1302313283. The reversal of 1302313231 is 1323132031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1302313231 - 2³ = 1302313223 is a prime.

It is a super-2 number, since 2×1302313231² = 3392039503275318722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1302313199 and 1302313208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302310231) by changing a digit.

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 as a sum of consecutive naturals, namely, 651156615 + 651156616.

It is an arithmetic number, because the mean of its divisors is an integer number (651156616).

Almost surely, 2^1302313231 is an apocalyptic number.

1302313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302313231 is an equidigital number, since it uses as much as digits as its factorization.

1302313231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1302313231 is about 36087.5772392661. The cubic root of 1302313231 is about 1092.0398440537.

Adding to 1302313231 its reverse (1323132031), we get a palindrome (2625445262).

The spelling of 1302313231 in words is "one billion, three hundred two million, three hundred thirteen thousand, two hundred thirty-one".