213220202203031 has 4 divisors (see below), whose sum is σ = 217756802249952. Its totient is φ = 208683602156112.

The previous prime is 213220202203003. The next prime is 213220202203103. The reversal of 213220202203031 is 130302202022312.

213220202203031 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 213220202203031 - 2⁶ = 213220202202967 is a prime.

It is a super-2 number, since 2×213220202203031² (a number of 29 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 = 213220202202988 and 213220202203006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220202203331) 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, 2268300023390 + ... + 2268300023483.

It is an arithmetic number, because the mean of its divisors is an integer number (54439200562488).

Almost surely, 2^{213220202203031} is an apocalyptic number.

213220202203031 is a deficient number, since it is larger than the sum of its proper divisors (4536600046921).

213220202203031 is an equidigital number, since it uses as much as digits as its factorization.

213220202203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536600046920.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 213220202203031 its reverse (130302202022312), we get a palindrome (343522404225343).

The spelling of 213220202203031 in words is "two hundred thirteen trillion, two hundred twenty billion, two hundred two million, two hundred three thousand, thirty-one".