213131211110 has 24 divisors (see below), whose sum is σ = 386587366848. Its totient is φ = 84601634000.

The previous prime is 213131211107. The next prime is 213131211133. The reversal of 213131211110 is 11112131312.

It is a super-4 number, since 4×213131211110⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449366 + ... + 792585.

It is an arithmetic number, because the mean of its divisors is an integer number (16107806952).

Almost surely, 2^213131211110 is an apocalyptic number.

213131211110 is a deficient number, since it is larger than the sum of its proper divisors (173456155738).

213131211110 is a wasteful number, since it uses less digits than its factorization.

213131211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242220 (or 1242089 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 213131211110 its reverse (11112131312), we get a palindrome (224243342422).

The spelling of 213131211110 in words is "two hundred thirteen billion, one hundred thirty-one million, two hundred eleven thousand, one hundred ten".