231101442 has 48 divisors (see below), whose sum is σ = 588264768. Its totient is φ = 64643040.

The previous prime is 231101441. The next prime is 231101443. The reversal of 231101442 is 244101132.

231101442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231101441) and next prime (231101443).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (231101441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42318 + ... + 47465.

It is an arithmetic number, because the mean of its divisors is an integer number (12255516).

Almost surely, 2^231101442 is an apocalyptic number.

231101442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231101442 is an abundant number, since it is smaller than the sum of its proper divisors (357163326).

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

231101442 is a wasteful number, since it uses less digits than its factorization.

231101442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89815 (or 89812 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 231101442 is about 15202.0209840666. The cubic root of 231101442 is about 613.6690471361.

Adding to 231101442 its reverse (244101132), we get a palindrome (475202574).

The spelling of 231101442 in words is "two hundred thirty-one million, one hundred one thousand, four hundred forty-two".