1322313131 has 4 divisors (see below), whose sum is σ = 1324376664. Its totient is φ = 1320249600.

The previous prime is 1322313127. The next prime is 1322313137. The reversal of 1322313131 is 1313132231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1322313131 - 2² = 1322313127 is a prime.

It is a super-2 number, since 2×1322313131² = 3497024032830046322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322313137) 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 3 ways as a sum of consecutive naturals, for example, 1030805 + ... + 1032086.

It is an arithmetic number, because the mean of its divisors is an integer number (331094166).

Almost surely, 2^1322313131 is an apocalyptic number.

1322313131 is a deficient number, since it is larger than the sum of its proper divisors (2063533).

1322313131 is an equidigital number, since it uses as much as digits as its factorization.

1322313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063532.

The product of its digits is 324, while the sum is 20.

The square root of 1322313131 is about 36363.6237330660. The cubic root of 1322313131 is about 1097.6016979838.

Adding to 1322313131 its reverse (1313132231), we get a palindrome (2635445362).

Subtracting from 1322313131 its reverse (1313132231), we obtain a square (9180900 = 3030²).

The spelling of 1322313131 in words is "one billion, three hundred twenty-two million, three hundred thirteen thousand, one hundred thirty-one".