1172315232 has 144 divisors (see below), whose sum is σ = 3661558992. Its totient is φ = 352834560.

The previous prime is 1172315161. The next prime is 1172315233. The reversal of 1172315232 is 2325132711.

1172315232 is a `hidden beast` number, since 117 + 2 + 315 + 232 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 1172315196 and 1172315205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172315233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496198 + ... + 498554.

It is an arithmetic number, because the mean of its divisors is an integer number (25427493).

Almost surely, 2^1172315232 is an apocalyptic number.

1172315232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172315232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1830779496).

1172315232 is an abundant number, since it is smaller than the sum of its proper divisors (2489243760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1172315232 is a wasteful number, since it uses less digits than its factorization.

1172315232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541 (or 2530 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 1172315232 is about 34239.0892402237. The cubic root of 1172315232 is about 1054.4228350275.

Adding to 1172315232 its reverse (2325132711), we get a palindrome (3497447943).

The spelling of 1172315232 in words is "one billion, one hundred seventy-two million, three hundred fifteen thousand, two hundred thirty-two".