42111346031 has 2 divisors, whose sum is σ = 42111346032. Its totient is φ = 42111346030.

The previous prime is 42111346007. The next prime is 42111346073. The reversal of 42111346031 is 13064311124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42111346031 - 2²⁶ = 42044237167 is a prime.

It is a super-2 number, since 2×42111346031² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42111346531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055673015 + 21055673016.

It is an arithmetic number, because the mean of its divisors is an integer number (21055673016).

Almost surely, 2^42111346031 is an apocalyptic number.

42111346031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111346031 is an equidigital number, since it uses as much as digits as its factorization.

42111346031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 42111346031 its reverse (13064311124), we get a palindrome (55175657155).

The spelling of 42111346031 in words is "forty-two billion, one hundred eleven million, three hundred forty-six thousand, thirty-one".