213113031101 has 16 divisors (see below), whose sum is σ = 228011397120. Its totient is φ = 198485280000.

The previous prime is 213113031091. The next prime is 213113031113. The reversal of 213113031101 is 101130311312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213113031101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213113031101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113031401) 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, 712976 + ... + 966726.

It is an arithmetic number, because the mean of its divisors is an integer number (14250712320).

Almost surely, 2^213113031101 is an apocalyptic number.

It is an amenable number.

213113031101 is a deficient number, since it is larger than the sum of its proper divisors (14898366019).

213113031101 is a wasteful number, since it uses less digits than its factorization.

213113031101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254284.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 213113031101 its reverse (101130311312), we get a palindrome (314243342413).

The spelling of 213113031101 in words is "two hundred thirteen billion, one hundred thirteen million, thirty-one thousand, one hundred one".