1170553231 has 4 divisors (see below), whose sum is σ = 1174905000. Its totient is φ = 1166201464.

The previous prime is 1170553213. The next prime is 1170553253. The reversal of 1170553231 is 1323550711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1170553231 - 2⁵ = 1170553199 is a prime.

It is a super-2 number, since 2×1170553231² = 2740389733209078722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1170553231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1170553261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175481 + ... + 2176018.

It is an arithmetic number, because the mean of its divisors is an integer number (293726250).

Almost surely, 2^1170553231 is an apocalyptic number.

1170553231 is a deficient number, since it is larger than the sum of its proper divisors (4351769).

1170553231 is an equidigital number, since it uses as much as digits as its factorization.

1170553231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351768.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 1170553231 is about 34213.3487253148. The cubic root of 1170553231 is about 1053.8943009416.

The spelling of 1170553231 in words is "one billion, one hundred seventy million, five hundred fifty-three thousand, two hundred thirty-one".