231113550 has 48 divisors (see below), whose sum is σ = 574753392. Its totient is φ = 61459200.

The previous prime is 231113539. The next prime is 231113551. The reversal of 231113550 is 55311132.

231113550 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231113551) 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, 57610 + ... + 61490.

It is an arithmetic number, because the mean of its divisors is an integer number (11974029).

Almost surely, 2^231113550 is an apocalyptic number.

231113550 is an abundant number, since it is smaller than the sum of its proper divisors (343639842).

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

231113550 is a wasteful number, since it uses less digits than its factorization.

231113550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293 (or 4288 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 231113550 is about 15202.4192153749. The cubic root of 231113550 is about 613.6797641831.

Adding to 231113550 its reverse (55311132), we get a palindrome (286424682).

The spelling of 231113550 in words is "two hundred thirty-one million, one hundred thirteen thousand, five hundred fifty".