1232151172 has 48 divisors (see below), whose sum is σ = 2581884928. Its totient is φ = 503379360.

The previous prime is 1232151163. The next prime is 1232151191. The reversal of 1232151172 is 2711512321.

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 in 15 ways as a sum of consecutive naturals, for example, 47563 + ... + 68749.

Almost surely, 2^1232151172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1232151172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1290942464).

1232151172 is an abundant number, since it is smaller than the sum of its proper divisors (1349733756).

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

1232151172 is a wasteful number, since it uses less digits than its factorization.

1232151172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21296 (or 21294 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 1232151172 is about 35102.0109395459. The cubic root of 1232151172 is about 1072.0655277109.

Adding to 1232151172 its reverse (2711512321), we get a palindrome (3943663493).

The spelling of 1232151172 in words is "one billion, two hundred thirty-two million, one hundred fifty-one thousand, one hundred seventy-two".