231120212442 has 32 divisors (see below), whose sum is σ = 546491145600. Its totient is φ = 63757299648.

The previous prime is 231120212437. The next prime is 231120212503. The reversal of 231120212442 is 244212021132.

It is a super-3 number, since 3×231120212442³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94875717 + ... + 94878152.

It is an arithmetic number, because the mean of its divisors is an integer number (17077848300).

Almost surely, 2^231120212442 is an apocalyptic number.

231120212442 is an abundant number, since it is smaller than the sum of its proper divisors (315370933158).

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

231120212442 is a wasteful number, since it uses less digits than its factorization.

231120212442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189753910.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 231120212442 its reverse (244212021132), we get a palindrome (475332233574).

The spelling of 231120212442 in words is "two hundred thirty-one billion, one hundred twenty million, two hundred twelve thousand, four hundred forty-two".