1135623131 has 2 divisors, whose sum is σ = 1135623132. Its totient is φ = 1135623130.

The previous prime is 1135623121. The next prime is 1135623191. The reversal of 1135623131 is 1313265311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1135623131 - 2⁶ = 1135623067 is a prime.

It is a super-2 number, since 2×1135623131² = 2579279791324486322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1135623131.

It is not a weakly prime, because it can be changed into another prime (1135623121) 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, 567811565 + 567811566.

It is an arithmetic number, because the mean of its divisors is an integer number (567811566).

Almost surely, 2^1135623131 is an apocalyptic number.

1135623131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135623131 is an equidigital number, since it uses as much as digits as its factorization.

1135623131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 26.

The square root of 1135623131 is about 33699.0078637339. The cubic root of 1135623131 is about 1043.3052912491.

Adding to 1135623131 its reverse (1313265311), we get a palindrome (2448888442).

The spelling of 1135623131 in words is "one billion, one hundred thirty-five million, six hundred twenty-three thousand, one hundred thirty-one".