1172313172 has 6 divisors (see below), whose sum is σ = 2051548058. Its totient is φ = 586156584.

The previous prime is 1172313169. The next prime is 1172313187. The reversal of 1172313172 is 2713132711.

It can be written as a sum of positive squares in only one way, i.e., 1169229636 + 3083536 = 34194^2 + 1756^2 .

It is a super-3 number, since 3×1172313172³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1172313172.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 146539143 + ... + 146539150.

Almost surely, 2^1172313172 is an apocalyptic number.

It is an amenable number.

1172313172 is a deficient number, since it is larger than the sum of its proper divisors (879234886).

1172313172 is a wasteful number, since it uses less digits than its factorization.

1172313172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293078297 (or 293078295 counting only the distinct ones).

The product of its digits is 1764, while the sum is 28.

The square root of 1172313172 is about 34239.0591576346. The cubic root of 1172313172 is about 1054.4222174142.

Adding to 1172313172 its reverse (2713132711), we get a palindrome (3885445883).

The spelling of 1172313172 in words is "one billion, one hundred seventy-two million, three hundred thirteen thousand, one hundred seventy-two".