213022020031 has 4 divisors (see below), whose sum is σ = 214976350600. Its totient is φ = 211067689464.

The previous prime is 213022020007. The next prime is 213022020053. The reversal of 213022020031 is 130020220312.

213022020031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213022020031 - 2³³ = 204432085439 is a prime.

It is a super-2 number, since 2×213022020031² (a number of 23 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 = 213022019987 and 213022020014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213022020091) 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, 977165121 + ... + 977165338.

It is an arithmetic number, because the mean of its divisors is an integer number (53744087650).

Almost surely, 2^213022020031 is an apocalyptic number.

213022020031 is a deficient number, since it is larger than the sum of its proper divisors (1954330569).

213022020031 is a wasteful number, since it uses less digits than its factorization.

213022020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954330568.

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

Adding to 213022020031 its reverse (130020220312), we get a palindrome (343042240343).

The spelling of 213022020031 in words is "two hundred thirteen billion, twenty-two million, twenty thousand, thirty-one".