1233243131 has 2 divisors, whose sum is σ = 1233243132. Its totient is φ = 1233243130.

The previous prime is 1233243101. The next prime is 1233243157. The reversal of 1233243131 is 1313423321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233243131 is a prime.

It is a super-2 number, since 2×1233243131² = 3041777240317366322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1233243097 and 1233243106.

It is not a weakly prime, because it can be changed into another prime (1233243101) 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 as a sum of consecutive naturals, namely, 616621565 + 616621566.

It is an arithmetic number, because the mean of its divisors is an integer number (616621566).

Almost surely, 2^1233243131 is an apocalyptic number.

1233243131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233243131 is an equidigital number, since it uses as much as digits as its factorization.

1233243131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 1233243131 is about 35117.5615753714. The cubic root of 1233243131 is about 1072.3821300833.

Adding to 1233243131 its reverse (1313423321), we get a palindrome (2546666452).

The spelling of 1233243131 in words is "one billion, two hundred thirty-three million, two hundred forty-three thousand, one hundred thirty-one".