4200020031 has 4 divisors (see below), whose sum is σ = 5600026712. Its totient is φ = 2800013352.

The previous prime is 4200019991. The next prime is 4200020101. The reversal of 4200020031 is 1300200024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4200020031 - 2¹⁰ = 4200019007 is a prime.

It is a super-2 number, since 2×4200020031² = 35280336521602481922, 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 = 4200019989 and 4200020016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200020131) 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, 700003336 + ... + 700003341.

It is an arithmetic number, because the mean of its divisors is an integer number (1400006678).

Almost surely, 2^4200020031 is an apocalyptic number.

4200020031 is a deficient number, since it is larger than the sum of its proper divisors (1400006681).

4200020031 is a wasteful number, since it uses less digits than its factorization.

4200020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400006680.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 4200020031 is about 64807.5615264145. The cubic root of 4200020031 is about 1613.4312109879.

Adding to 4200020031 its reverse (1300200024), we get a palindrome (5500220055).

The spelling of 4200020031 in words is "four billion, two hundred million, twenty thousand, thirty-one".