231336040 has 32 divisors (see below), whose sum is σ = 560546280. Its totient is φ = 85416192.

The previous prime is 231336031. The next prime is 231336071. The reversal of 231336040 is 40633132.

231336040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 185014404 + 46321636 = 13602^2 + 6806^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221919 + ... + 222958.

Almost surely, 2^231336040 is an apocalyptic number.

231336040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231336040 is an abundant number, since it is smaller than the sum of its proper divisors (329210240).

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

231336040 is a wasteful number, since it uses less digits than its factorization.

231336040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444901 (or 444897 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 231336040 is about 15209.7350404272. The cubic root of 231336040 is about 613.8766281919.

Adding to 231336040 its reverse (40633132), we get a palindrome (271969172).

The spelling of 231336040 in words is "two hundred thirty-one million, three hundred thirty-six thousand, forty".