231671946 has 32 divisors (see below), whose sum is σ = 507384000. Its totient is φ = 69937280.

The previous prime is 231671941. The next prime is 231671963. The reversal of 231671946 is 649176132.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231671941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11230 + ... + 24278.

It is an arithmetic number, because the mean of its divisors is an integer number (15855750).

Almost surely, 2^231671946 is an apocalyptic number.

231671946 is an abundant number, since it is smaller than the sum of its proper divisors (275712054).

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

231671946 is a wasteful number, since it uses less digits than its factorization.

231671946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13334.

The product of its digits is 54432, while the sum is 39.

The square root of 231671946 is about 15220.7735020268. The cubic root of 231671946 is about 614.1736061555.

The spelling of 231671946 in words is "two hundred thirty-one million, six hundred seventy-one thousand, nine hundred forty-six".