42531403332311 has 4 divisors (see below), whose sum is σ = 43520505735432. Its totient is φ = 41542300929192.

The previous prime is 42531403332281. The next prime is 42531403332329. The reversal of 42531403332311 is 11323330413524.

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-42531403332311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42531403332371) 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, 494551201496 + ... + 494551201581.

It is an arithmetic number, because the mean of its divisors is an integer number (10880126433858).

Almost surely, 2^{42531403332311} is an apocalyptic number.

42531403332311 is a deficient number, since it is larger than the sum of its proper divisors (989102403121).

42531403332311 is an equidigital number, since it uses as much as digits as its factorization.

42531403332311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989102403120.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 42531403332311 its reverse (11323330413524), we get a palindrome (53854733745835).

The spelling of 42531403332311 in words is "forty-two trillion, five hundred thirty-one billion, four hundred three million, three hundred thirty-two thousand, three hundred eleven".