2231151172 has 12 divisors (see below), whose sum is σ = 3928469776. Its totient is φ = 1108731240.

The previous prime is 2231151151. The next prime is 2231151173. The reversal of 2231151172 is 2711511322.

It is a super-3 number, since 3×2231151172³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2231151173) 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, 1710354 + ... + 1711657.

Almost surely, 2^2231151172 is an apocalyptic number.

It is an amenable number.

2231151172 is a deficient number, since it is larger than the sum of its proper divisors (1697318604).

2231151172 is a wasteful number, since it uses less digits than its factorization.

2231151172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422178 (or 3422176 counting only the distinct ones).

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

The square root of 2231151172 is about 47235.0629511595. The cubic root of 2231151172 is about 1306.7013275490.

Adding to 2231151172 its reverse (2711511322), we get a palindrome (4942662494).

The spelling of 2231151172 in words is "two billion, two hundred thirty-one million, one hundred fifty-one thousand, one hundred seventy-two".