11553522231 has 8 divisors (see below), whose sum is σ = 15451237504. Its totient is φ = 7679077560.

The previous prime is 11553522221. The next prime is 11553522241. The reversal of 11553522231 is 13222535511.

It is an interprime number because it is at equal distance from previous prime (11553522221) and next prime (11553522241).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11553522231 - 2⁵ = 11553522199 is a prime.

It is a super-2 number, since 2×11553522231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11553522221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5816491 + ... + 5818476.

It is an arithmetic number, because the mean of its divisors is an integer number (1931404688).

Almost surely, 2^11553522231 is an apocalyptic number.

11553522231 is a deficient number, since it is larger than the sum of its proper divisors (3897715273).

11553522231 is a wasteful number, since it uses less digits than its factorization.

11553522231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11635301.

The product of its digits is 9000, while the sum is 30.

The spelling of 11553522231 in words is "eleven billion, five hundred fifty-three million, five hundred twenty-two thousand, two hundred thirty-one".