42031101031 has 4 divisors (see below), whose sum is σ = 42051281272. Its totient is φ = 42010920792.

The previous prime is 42031101029. The next prime is 42031101043. The reversal of 42031101031 is 13010113024.

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 42031101031 - 2¹ = 42031101029 is a prime.

It is a super-2 number, since 2×42031101031² (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 = 42031100996 and 42031101014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031101061) 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, 10086996 + ... + 10091161.

It is an arithmetic number, because the mean of its divisors is an integer number (10512820318).

Almost surely, 2^42031101031 is an apocalyptic number.

42031101031 is a deficient number, since it is larger than the sum of its proper divisors (20180241).

42031101031 is a wasteful number, since it uses less digits than its factorization.

42031101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20180240.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 42031101031 its reverse (13010113024), we get a palindrome (55041214055).

The spelling of 42031101031 in words is "forty-two billion, thirty-one million, one hundred one thousand, thirty-one".