42303216531 has 4 divisors (see below), whose sum is σ = 56404288712. Its totient is φ = 28202144352.

The previous prime is 42303216503. The next prime is 42303216563. The reversal of 42303216531 is 13561230324.

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

It is not a de Polignac number, because 42303216531 - 2⁶ = 42303216467 is a prime.

It is a super-2 number, since 2×42303216531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42303216331) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7050536086 + ... + 7050536091.

It is an arithmetic number, because the mean of its divisors is an integer number (14101072178).

Almost surely, 2^42303216531 is an apocalyptic number.

42303216531 is a deficient number, since it is larger than the sum of its proper divisors (14101072181).

42303216531 is a wasteful number, since it uses less digits than its factorization.

42303216531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14101072180.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 42303216531 its reverse (13561230324), we get a palindrome (55864446855).

The spelling of 42303216531 in words is "forty-two billion, three hundred three million, two hundred sixteen thousand, five hundred thirty-one".