42031361566031 has 4 divisors (see below), whose sum is σ = 42607133642352. Its totient is φ = 41455589489712.

The previous prime is 42031361565983. The next prime is 42031361566081. The reversal of 42031361566031 is 13066516313024.

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 42031361566031 - 2¹⁰ = 42031361565007 is a prime.

It is a super-2 number, since 2×42031361566031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42031361566031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031361566081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287886038051 + ... + 287886038196.

It is an arithmetic number, because the mean of its divisors is an integer number (10651783410588).

Almost surely, 2^{42031361566031} is an apocalyptic number.

42031361566031 is a deficient number, since it is larger than the sum of its proper divisors (575772076321).

42031361566031 is an equidigital number, since it uses as much as digits as its factorization.

42031361566031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575772076320.

The product of its (nonzero) digits is 233280, while the sum is 41.

Adding to 42031361566031 its reverse (13066516313024), we get a palindrome (55097877879055).

The spelling of 42031361566031 in words is "forty-two trillion, thirty-one billion, three hundred sixty-one million, five hundred sixty-six thousand, thirty-one".