945172231 has 4 divisors (see below), whose sum is σ = 945531952. Its totient is φ = 944812512.

The previous prime is 945172223. The next prime is 945172279. The reversal of 945172231 is 132271549.

It is a happy number.

945172231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 945172231 - 2³ = 945172223 is a prime.

It is a super-2 number, since 2×945172231² = 1786701092507034722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945172331) 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, 175890 + ... + 181183.

It is an arithmetic number, because the mean of its divisors is an integer number (236382988).

Almost surely, 2^945172231 is an apocalyptic number.

945172231 is a deficient number, since it is larger than the sum of its proper divisors (359721).

945172231 is a wasteful number, since it uses less digits than its factorization.

945172231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359720.

The product of its digits is 15120, while the sum is 34.

The square root of 945172231 is about 30743.6535076754. The cubic root of 945172231 is about 981.3795062628.

The spelling of 945172231 in words is "nine hundred forty-five million, one hundred seventy-two thousand, two hundred thirty-one".