1331031442242 has 16 divisors (see below), whose sum is σ = 2663725653792. Its totient is φ = 443400019200.

The previous prime is 1331031442177. The next prime is 1331031442259. The reversal of 1331031442242 is 2422441301331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69271648 + ... + 69290859.

It is an arithmetic number, because the mean of its divisors is an integer number (166482853362).

Almost surely, 2^{1331031442242} is an apocalyptic number.

1331031442242 is an abundant number, since it is smaller than the sum of its proper divisors (1332694211550).

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

1331031442242 is a wasteful number, since it uses less digits than its factorization.

1331031442242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138564113.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1331031442242 its reverse (2422441301331), we get a palindrome (3753472743573).

The spelling of 1331031442242 in words is "one trillion, three hundred thirty-one billion, thirty-one million, four hundred forty-two thousand, two hundred forty-two".