1231332140242 has 8 divisors (see below), whose sum is σ = 1849138419456. Its totient is φ = 614952667092.

The previous prime is 1231332140191. The next prime is 1231332140249. The reversal of 1231332140242 is 2420412331321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1231332140242.

It is not an unprimeable number, because it can be changed into a prime (1231332140249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356699358 + ... + 356702809.

It is an arithmetic number, because the mean of its divisors is an integer number (231142302432).

Almost surely, 2^{1231332140242} is an apocalyptic number.

1231332140242 is a deficient number, since it is larger than the sum of its proper divisors (617806279214).

1231332140242 is an equidigital number, since it uses as much as digits as its factorization.

1231332140242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713403032.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1231332140242 its reverse (2420412331321), we get a palindrome (3651744471563).

The spelling of 1231332140242 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-two million, one hundred forty thousand, two hundred forty-two".