20200231213 has 4 divisors (see below), whose sum is σ = 20896790940. Its totient is φ = 19503671488.

The previous prime is 20200231199. The next prime is 20200231231. The reversal of 20200231213 is 31213200202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31213200202 = 2 ⋅15606600101.

It can be written as a sum of positive squares in 2 ways, for example, as 7617449284 + 12582781929 = 87278^2 + 112173^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200231213 - 2²⁵ = 20166676781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200231013) 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, 348279820 + ... + 348279877.

It is an arithmetic number, because the mean of its divisors is an integer number (5224197735).

Almost surely, 2^20200231213 is an apocalyptic number.

It is an amenable number.

20200231213 is a deficient number, since it is larger than the sum of its proper divisors (696559727).

20200231213 is an equidigital number, since it uses as much as digits as its factorization.

20200231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696559726.

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

Adding to 20200231213 its reverse (31213200202), we get a palindrome (51413431415).

The spelling of 20200231213 in words is "twenty billion, two hundred million, two hundred thirty-one thousand, two hundred thirteen".