231133243040 has 144 divisors (see below), whose sum is σ = 672568990632. Its totient is φ = 74584129536.

The previous prime is 231133243039. The next prime is 231133243049. The reversal of 231133243040 is 40342331132.

It can be written as a sum of positive squares in 4 ways, for example, as 228954594064 + 2178648976 = 478492^2 + 46676^2 .

It is not an unprimeable number, because it can be changed into a prime (231133243049) 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, 733817 + ... + 1000376.

Almost surely, 2^231133243040 is an apocalyptic number.

231133243040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231133243040 is an abundant number, since it is smaller than the sum of its proper divisors (441435747592).

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

231133243040 is a wasteful number, since it uses less digits than its factorization.

231133243040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734239 (or 1734224 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 231133243040 its reverse (40342331132), we get a palindrome (271475574172).

The spelling of 231133243040 in words is "two hundred thirty-one billion, one hundred thirty-three million, two hundred forty-three thousand, forty".