11233534431 has 32 divisors (see below), whose sum is σ = 18395251200. Its totient is φ = 5951379456.

The previous prime is 11233534427. The next prime is 11233534439. The reversal of 11233534431 is 13443533211.

It is a happy number.

It is not a de Polignac number, because 11233534431 - 2² = 11233534427 is a prime.

It is a super-2 number, since 2×11233534431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233534439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210906 + ... + 258743.

It is an arithmetic number, because the mean of its divisors is an integer number (574851600).

Almost surely, 2^11233534431 is an apocalyptic number.

11233534431 is a deficient number, since it is larger than the sum of its proper divisors (7161716769).

11233534431 is a wasteful number, since it uses less digits than its factorization.

11233534431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469743.

The product of its digits is 12960, while the sum is 30.

The spelling of 11233534431 in words is "eleven billion, two hundred thirty-three million, five hundred thirty-four thousand, four hundred thirty-one".