1156023135 has 12 divisors (see below), whose sum is σ = 2003773512. Its totient is φ = 616545648.

The previous prime is 1156023133. The next prime is 1156023157. The reversal of 1156023135 is 5313206511.

It is not a de Polignac number, because 1156023135 - 2¹ = 1156023133 is a prime.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1156023099 and 1156023108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156023133) 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 11 ways as a sum of consecutive naturals, for example, 12844657 + ... + 12844746.

It is an arithmetic number, because the mean of its divisors is an integer number (166981126).

Almost surely, 2^1156023135 is an apocalyptic number.

1156023135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1156023135 is a deficient number, since it is larger than the sum of its proper divisors (847750377).

1156023135 is a wasteful number, since it uses less digits than its factorization.

1156023135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25689414 (or 25689411 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1156023135 is about 34000.3402188860. The cubic root of 1156023135 is about 1049.5154635134.

Adding to 1156023135 its reverse (5313206511), we get a palindrome (6469229646).

The spelling of 1156023135 in words is "one billion, one hundred fifty-six million, twenty-three thousand, one hundred thirty-five".