42030100031 has 4 divisors (see below), whose sum is σ = 43055224464. Its totient is φ = 41004975600.

The previous prime is 42030099971. The next prime is 42030100033. The reversal of 42030100031 is 13000103024.

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 42030100031 - 2¹⁴ = 42030083647 is a prime.

It is a super-2 number, since 2×42030100031² (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 = 42030099979 and 42030100015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42030100033) 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, 512562155 + ... + 512562236.

It is an arithmetic number, because the mean of its divisors is an integer number (10763806116).

Almost surely, 2^42030100031 is an apocalyptic number.

42030100031 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42030100031 is a deficient number, since it is larger than the sum of its proper divisors (1025124433).

42030100031 is a wasteful number, since it uses less digits than its factorization.

42030100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025124432.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 42030100031 its reverse (13000103024), we get a palindrome (55030203055).

The spelling of 42030100031 in words is "forty-two billion, thirty million, one hundred thousand, thirty-one".