42215020331 has 4 divisors (see below), whose sum is σ = 46052749464. Its totient is φ = 38377291200.

The previous prime is 42215020297. The next prime is 42215020357. The reversal of 42215020331 is 13302051224.

42215020331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42215020331 is a prime.

It is a super-2 number, since 2×42215020331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42215020297 and 42215020306.

It is not an unprimeable number, because it can be changed into a prime (42215020361) 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, 1918864550 + ... + 1918864571.

It is an arithmetic number, because the mean of its divisors is an integer number (11513187366).

Almost surely, 2^42215020331 is an apocalyptic number.

42215020331 is a deficient number, since it is larger than the sum of its proper divisors (3837729133).

42215020331 is a wasteful number, since it uses less digits than its factorization.

42215020331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837729132.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 42215020331 its reverse (13302051224), we get a palindrome (55517071555).

The spelling of 42215020331 in words is "forty-two billion, two hundred fifteen million, twenty thousand, three hundred thirty-one".