1223302131 has 6 divisors (see below), whose sum is σ = 1766991980. Its totient is φ = 815534748.

The previous prime is 1223302111. The next prime is 1223302139. The reversal of 1223302131 is 1312033221.

1223302131 is a `hidden beast` number, since 122 + 330 + 213 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1223302131 is a prime.

It is a super-2 number, since 2×1223302131² = 2992936207418282322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223302139) 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 5 ways as a sum of consecutive naturals, for example, 67961221 + ... + 67961238.

Almost surely, 2^1223302131 is an apocalyptic number.

1223302131 is a deficient number, since it is larger than the sum of its proper divisors (543689849).

1223302131 is a wasteful number, since it uses less digits than its factorization.

1223302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135922465 (or 135922462 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1223302131 is about 34975.7363181964. The cubic root of 1223302131 is about 1069.4929122536.

Adding to 1223302131 its reverse (1312033221), we get a palindrome (2535335352).

The spelling of 1223302131 in words is "one billion, two hundred twenty-three million, three hundred two thousand, one hundred thirty-one".