231662945 has 16 divisors (see below), whose sum is σ = 283364352. Its totient is φ = 181779840.

The previous prime is 231662941. The next prime is 231662983. The reversal of 231662945 is 549266132.

It is not a de Polignac number, because 231662945 - 2² = 231662941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231662899 and 231662908.

It is not an unprimeable number, because it can be changed into a prime (231662941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68054 + ... + 71376.

It is an arithmetic number, because the mean of its divisors is an integer number (17710272).

Almost surely, 2^231662945 is an apocalyptic number.

It is an amenable number.

231662945 is a deficient number, since it is larger than the sum of its proper divisors (51701407).

231662945 is a wasteful number, since it uses less digits than its factorization.

231662945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592.

The product of its digits is 77760, while the sum is 38.

The square root of 231662945 is about 15220.4778177296. The cubic root of 231662945 is about 614.1656520227.

The spelling of 231662945 in words is "two hundred thirty-one million, six hundred sixty-two thousand, nine hundred forty-five".