1135431099 has 48 divisors (see below), whose sum is σ = 1844485344. Its totient is φ = 667008000.

The previous prime is 1135431097. The next prime is 1135431131. The reversal of 1135431099 is 9901345311.

1135431099 is a `hidden beast` number, since 1 + 1 + 3 + 543 + 109 + 9 = 666.

It is not a de Polignac number, because 1135431099 - 2¹ = 1135431097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1135431097) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1468477 + ... + 1469249.

It is an arithmetic number, because the mean of its divisors is an integer number (38426778).

Almost surely, 2^1135431099 is an apocalyptic number.

1135431099 is a deficient number, since it is larger than the sum of its proper divisors (709054245).

1135431099 is a wasteful number, since it uses less digits than its factorization.

1135431099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 1135431099 is about 33696.1585199263. The cubic root of 1135431099 is about 1043.2464808656.

It can be divided in two parts, 1135 and 431099, that added together give a palindrome (432234).

The spelling of 1135431099 in words is "one billion, one hundred thirty-five million, four hundred thirty-one thousand, ninety-nine".