231290676 has 72 divisors (see below), whose sum is σ = 601965000. Its totient is φ = 74833920.

The previous prime is 231290671. The next prime is 231290677. The reversal of 231290676 is 676092132.

It can be written as a sum of positive squares in 4 ways, for example, as 18714276 + 212576400 = 4326^2 + 14580^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 231290676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231290671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 514900 + ... + 515348.

It is an arithmetic number, because the mean of its divisors is an integer number (8360625).

Almost surely, 2^231290676 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 231290676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300982500).

231290676 is an abundant number, since it is smaller than the sum of its proper divisors (370674324).

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

231290676 is a wasteful number, since it uses less digits than its factorization.

231290676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 231290676 is about 15208.2436855805. The cubic root of 231290676 is about 613.8364993821.

The spelling of 231290676 in words is "two hundred thirty-one million, two hundred ninety thousand, six hundred seventy-six".