31421033113242 has 16 divisors (see below), whose sum is σ = 63300767441472. Its totient is φ = 10397227501920.

The previous prime is 31421033113213. The next prime is 31421033113297. The reversal of 31421033113242 is 24231133012413.

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, 19112549734 + ... + 19112551377.

It is an arithmetic number, because the mean of its divisors is an integer number (3956297965092).

Almost surely, 2^{31421033113242} is an apocalyptic number.

31421033113242 is an abundant number, since it is smaller than the sum of its proper divisors (31879734328230).

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

31421033113242 is a wasteful number, since it uses less digits than its factorization.

31421033113242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38225101253.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 31421033113242 its reverse (24231133012413), we get a palindrome (55652166125655).

The spelling of 31421033113242 in words is "thirty-one trillion, four hundred twenty-one billion, thirty-three million, one hundred thirteen thousand, two hundred forty-two".