42101110031 has 4 divisors (see below), whose sum is σ = 42108732912. Its totient is φ = 42093487152.

The previous prime is 42101110021. The next prime is 42101110039. The reversal of 42101110031 is 13001110124.

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 42101110031 - 2²² = 42096915727 is a prime.

It is a super-2 number, since 2×42101110031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42101109988 and 42101110015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42101110039) 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, 3803150 + ... + 3814203.

It is an arithmetic number, because the mean of its divisors is an integer number (10527183228).

Almost surely, 2^42101110031 is an apocalyptic number.

42101110031 is a deficient number, since it is larger than the sum of its proper divisors (7622881).

42101110031 is an equidigital number, since it uses as much as digits as its factorization.

42101110031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7622880.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 42101110031 its reverse (13001110124), we get a palindrome (55102220155).

The spelling of 42101110031 in words is "forty-two billion, one hundred one million, one hundred ten thousand, thirty-one".