231671952 has 90 divisors (see below), whose sum is σ = 671838882. Its totient is φ = 74522112.

The previous prime is 231671941. The next prime is 231671963. The reversal of 231671952 is 259176132.

It is an interprime number because it is at equal distance from previous prime (231671941) and next prime (231671963).

It can be written as a sum of positive squares in 3 ways, for example, as 79495056 + 152176896 = 8916^2 + 12336^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 120148 + ... + 122060.

Almost surely, 2^231671952 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 231671952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335919441).

231671952 is an abundant number, since it is smaller than the sum of its proper divisors (440166930).

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

231671952 is a wasteful number, since it uses less digits than its factorization.

231671952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1947 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 231671952 is about 15220.7736991258. The cubic root of 231671952 is about 614.1736114576.

The spelling of 231671952 in words is "two hundred thirty-one million, six hundred seventy-one thousand, nine hundred fifty-two".