1322155313 has 2 divisors, whose sum is σ = 1322155314. Its totient is φ = 1322155312.

The previous prime is 1322155309. The next prime is 1322155319. The reversal of 1322155313 is 3135512231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769341169 + 552814144 = 27737^2 + 23512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322155313 - 2² = 1322155309 is a prime.

It is not a weakly prime, because it can be changed into another prime (1322155319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661077656 + 661077657.

It is an arithmetic number, because the mean of its divisors is an integer number (661077657).

Almost surely, 2^1322155313 is an apocalyptic number.

It is an amenable number.

1322155313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322155313 is an equidigital number, since it uses as much as digits as its factorization.

1322155313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 1322155313 is about 36361.4536700611. The cubic root of 1322155313 is about 1097.5580300123.

Adding to 1322155313 its reverse (3135512231), we get a palindrome (4457667544).

The spelling of 1322155313 in words is "one billion, three hundred twenty-two million, one hundred fifty-five thousand, three hundred thirteen".