1222323131 has 2 divisors, whose sum is σ = 1222323132. Its totient is φ = 1222323130.

The previous prime is 1222323127. The next prime is 1222323161. The reversal of 1222323131 is 1313232221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222323131 - 2² = 1222323127 is a prime.

It is a super-2 number, since 2×1222323131² = 2988147673155286322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222323101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611161565 + 611161566.

It is an arithmetic number, because the mean of its divisors is an integer number (611161566).

Almost surely, 2^1222323131 is an apocalyptic number.

1222323131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222323131 is an equidigital number, since it uses as much as digits as its factorization.

1222323131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 1222323131 is about 34961.7381003863. The cubic root of 1222323131 is about 1069.2075335860.

Adding to 1222323131 its reverse (1313232221), we get a palindrome (2535555352).

The spelling of 1222323131 in words is "one billion, two hundred twenty-two million, three hundred twenty-three thousand, one hundred thirty-one".