231622804 has 36 divisors (see below), whose sum is σ = 474195540. Its totient is φ = 98703360.

The previous prime is 231622801. The next prime is 231622823. The reversal of 231622804 is 408226132.

It can be written as a sum of positive squares in 2 ways, for example, as 9314704 + 222308100 = 3052^2 + 14910^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231622801) 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 11 ways as a sum of consecutive naturals, for example, 32212 + ... + 38740.

Almost surely, 2^231622804 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 231622804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237097770).

231622804 is an abundant number, since it is smaller than the sum of its proper divisors (242572736).

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

231622804 is a wasteful number, since it uses less digits than its factorization.

231622804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728 (or 6719 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 231622804 is about 15219.1591094909. The cubic root of 231622804 is about 614.1301771399.

Adding to 231622804 its reverse (408226132), we get a palindrome (639848936).

The spelling of 231622804 in words is "two hundred thirty-one million, six hundred twenty-two thousand, eight hundred four".