213203202111231 has 16 divisors (see below), whose sum is σ = 304878461811840. Its totient is φ = 132114000114720.

The previous prime is 213203202111227. The next prime is 213203202111293. The reversal of 213203202111231 is 132111202302312.

It is not a de Polignac number, because 213203202111231 - 2² = 213203202111227 is a prime.

It is a super-2 number, since 2×213203202111231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213203202111331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35286855985 + ... + 35286862026.

It is an arithmetic number, because the mean of its divisors is an integer number (19054903863240).

Almost surely, 2^{213203202111231} is an apocalyptic number.

213203202111231 is a deficient number, since it is larger than the sum of its proper divisors (91675259700609).

213203202111231 is a wasteful number, since it uses less digits than its factorization.

213203202111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70573718086.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 213203202111231 its reverse (132111202302312), we get a palindrome (345314404413543).

The spelling of 213203202111231 in words is "two hundred thirteen trillion, two hundred three billion, two hundred two million, one hundred eleven thousand, two hundred thirty-one".