231335433012 has 24 divisors (see below), whose sum is σ = 539791531776. Its totient is φ = 77110546048.

The previous prime is 231335432899. The next prime is 231335433031. The reversal of 231335433012 is 210334533132.

It is a congruent number.

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, 872668 + ... + 1106444.

It is an arithmetic number, because the mean of its divisors is an integer number (22491313824).

Almost surely, 2^231335433012 is an apocalyptic number.

It is an amenable number.

231335433012 is an abundant number, since it is smaller than the sum of its proper divisors (308456098764).

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

231335433012 is a wasteful number, since it uses less digits than its factorization.

231335433012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316247 (or 316245 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 231335433012 its reverse (210334533132), we get a palindrome (441669966144).

The spelling of 231335433012 in words is "two hundred thirty-one billion, three hundred thirty-five million, four hundred thirty-three thousand, twelve".