213113791 has 24 divisors (see below), whose sum is σ = 248018400. Its totient is φ = 182603520.

The previous prime is 213113783. The next prime is 213113851. The reversal of 213113791 is 197311312.

It is not a de Polignac number, because 213113791 - 2³ = 213113783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202635 + ... + 203683.

It is an arithmetic number, because the mean of its divisors is an integer number (10334100).

Almost surely, 2^213113791 is an apocalyptic number.

213113791 is a deficient number, since it is larger than the sum of its proper divisors (34904609).

213113791 is a wasteful number, since it uses less digits than its factorization.

213113791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1156 counting only the distinct ones).

The product of its digits is 1134, while the sum is 28.

The square root of 213113791 is about 14598.4174142268. The cubic root of 213113791 is about 597.3155920940.

The spelling of 213113791 in words is "two hundred thirteen million, one hundred thirteen thousand, seven hundred ninety-one".