213143424111 has 16 divisors (see below), whose sum is σ = 315935272800. Its totient is φ = 142020359424.

The previous prime is 213143424103. The next prime is 213143424119. The reversal of 213143424111 is 111424341312.

It is a happy number.

213143424111 is a `hidden beast` number, since 2 + 1 + 314 + 342 + 4 + 1 + 1 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (213143424103) and next prime (213143424119).

It is not a de Polignac number, because 213143424111 - 2³ = 213143424103 is a prime.

It is a super-2 number, since 2×213143424111² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213143424119) 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, 2038516 + ... + 2140521.

It is an arithmetic number, because the mean of its divisors is an integer number (19745954550).

Almost surely, 2^213143424111 is an apocalyptic number.

213143424111 is a deficient number, since it is larger than the sum of its proper divisors (102791848689).

213143424111 is a wasteful number, since it uses less digits than its factorization.

213143424111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180935 (or 4180929 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 213143424111 its reverse (111424341312), we get a palindrome (324567765423).

The spelling of 213143424111 in words is "two hundred thirteen billion, one hundred forty-three million, four hundred twenty-four thousand, one hundred eleven".