213023232020 has 12 divisors (see below), whose sum is σ = 447348787284. Its totient is φ = 85209292800.

The previous prime is 213023231999. The next prime is 213023232043. The reversal of 213023232020 is 20232320312.

It can be written as a sum of positive squares in 2 ways, for example, as 67918614544 + 145104617476 = 260612^2 + 380926^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10651161601 = 213023232020 / (2 + 1 + 3 + 0 + 2 + 3 + 2 + 3 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 213023231983 and 213023232001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5325580781 + ... + 5325580820.

It is an arithmetic number, because the mean of its divisors is an integer number (37279065607).

Almost surely, 2^213023232020 is an apocalyptic number.

213023232020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213023232020 is an abundant number, since it is smaller than the sum of its proper divisors (234325555264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213023232020 is a wasteful number, since it uses less digits than its factorization.

213023232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651161610 (or 10651161608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 213023232020 its reverse (20232320312), we get a palindrome (233255552332).

The spelling of 213023232020 in words is "two hundred thirteen billion, twenty-three million, two hundred thirty-two thousand, twenty".