2042100031 has 4 divisors (see below), whose sum is σ = 2149579000. Its totient is φ = 1934621064.

The previous prime is 2042100007. The next prime is 2042100089. The reversal of 2042100031 is 1300012402.

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 2042100031 - 2⁵ = 2042099999 is a prime.

It is a super-2 number, since 2×2042100031² = 8340345073220401922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2042099984 and 2042100020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042101031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53739456 + ... + 53739493.

It is an arithmetic number, because the mean of its divisors is an integer number (537394750).

Almost surely, 2^2042100031 is an apocalyptic number.

2042100031 is a deficient number, since it is larger than the sum of its proper divisors (107478969).

2042100031 is a wasteful number, since it uses less digits than its factorization.

2042100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107478968.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2042100031 is about 45189.6009165826. The cubic root of 2042100031 is about 1268.7001872716.

Adding to 2042100031 its reverse (1300012402), we get a palindrome (3342112433).

The spelling of 2042100031 in words is "two billion, forty-two million, one hundred thousand, thirty-one".