11231857329 has 64 divisors (see below), whose sum is σ = 19510087680. Its totient is φ = 5573272320.

The previous prime is 11231857327. The next prime is 11231857369. The reversal of 11231857329 is 92375813211.

11231857329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11231857329 - 2¹ = 11231857327 is a prime.

It is a super-2 number, since 2×11231857329² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231857327) 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 63 ways as a sum of consecutive naturals, for example, 6571327 + ... + 6573035.

It is an arithmetic number, because the mean of its divisors is an integer number (304845120).

Almost surely, 2^11231857329 is an apocalyptic number.

It is an amenable number.

11231857329 is a deficient number, since it is larger than the sum of its proper divisors (8278230351).

11231857329 is a wasteful number, since it uses less digits than its factorization.

11231857329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990.

The product of its digits is 90720, while the sum is 42.

The spelling of 11231857329 in words is "eleven billion, two hundred thirty-one million, eight hundred fifty-seven thousand, three hundred twenty-nine".