42815751331 has 4 divisors (see below), whose sum is σ = 42827355064. Its totient is φ = 42804147600.

The previous prime is 42815751299. The next prime is 42815751337. The reversal of 42815751331 is 13315751824.

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

It is a cyclic number.

It is not a de Polignac number, because 42815751331 - 2⁵ = 42815751299 is a prime.

It is a super-2 number, since 2×42815751331² (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 (42815751337) 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, 5796330 + ... + 5803711.

It is an arithmetic number, because the mean of its divisors is an integer number (10706838766).

Almost surely, 2^42815751331 is an apocalyptic number.

42815751331 is a deficient number, since it is larger than the sum of its proper divisors (11603733).

42815751331 is a wasteful number, since it uses less digits than its factorization.

42815751331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11603732.

The product of its digits is 100800, while the sum is 40.

The spelling of 42815751331 in words is "forty-two billion, eight hundred fifteen million, seven hundred fifty-one thousand, three hundred thirty-one".