4020213031 has 4 divisors (see below), whose sum is σ = 4020452872. Its totient is φ = 4019973192.

The previous prime is 4020213011. The next prime is 4020213107. The reversal of 4020213031 is 1303120204.

It is a happy number.

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 4020213031 - 2²⁹ = 3483342119 is a prime.

It is a super-2 number, since 2×4020213031² = 32324225629244413922, 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 = 4020212996 and 4020213014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020213011) 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, 92721 + ... + 128986.

It is an arithmetic number, because the mean of its divisors is an integer number (1005113218).

Almost surely, 2^4020213031 is an apocalyptic number.

4020213031 is a deficient number, since it is larger than the sum of its proper divisors (239841).

4020213031 is a wasteful number, since it uses less digits than its factorization.

4020213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239840.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 4020213031 is about 63405.1498775928. The cubic root of 4020213031 is about 1590.0704095767.

Adding to 4020213031 its reverse (1303120204), we get a palindrome (5323333235).

The spelling of 4020213031 in words is "four billion, twenty million, two hundred thirteen thousand, thirty-one".