1153313172 has 36 divisors (see below), whose sum is σ = 3180349536. Its totient is φ = 349488720.

The previous prime is 1153313159. The next prime is 1153313177. The reversal of 1153313172 is 2713133511.

It is a happy number.

1153313172 is a `hidden beast` number, since 1 + 15 + 331 + 317 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1153313172³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153313177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1455808 + ... + 1456599.

Almost surely, 2^1153313172 is an apocalyptic number.

1153313172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1153313172 is an abundant number, since it is smaller than the sum of its proper divisors (2027036364).

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

1153313172 is a wasteful number, since it uses less digits than its factorization.

1153313172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912428 (or 2912423 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 1153313172 is about 33960.4648378081. The cubic root of 1153313172 is about 1048.6947263629.

Adding to 1153313172 its reverse (2713133511), we get a palindrome (3866446683).

The spelling of 1153313172 in words is "one billion, one hundred fifty-three million, three hundred thirteen thousand, one hundred seventy-two".