231332213442 has 16 divisors (see below), whose sum is σ = 504724829472. Its totient is φ = 70100670720.

The previous prime is 231332213393. The next prime is 231332213443. The reversal of 231332213442 is 244312233132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (231332213443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1752516703 + ... + 1752516834.

It is an arithmetic number, because the mean of its divisors is an integer number (31545301842).

Almost surely, 2^231332213442 is an apocalyptic number.

231332213442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231332213442 is an abundant number, since it is smaller than the sum of its proper divisors (273392616030).

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

231332213442 is a wasteful number, since it uses less digits than its factorization.

231332213442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505033553.

The product of its digits is 20736, while the sum is 30.

Adding to 231332213442 its reverse (244312233132), we get a palindrome (475644446574).

The spelling of 231332213442 in words is "two hundred thirty-one billion, three hundred thirty-two million, two hundred thirteen thousand, four hundred forty-two".