235812813 has 16 divisors (see below), whose sum is σ = 329152896. Its totient is φ = 149885120.

The previous prime is 235812809. The next prime is 235812827. The reversal of 235812813 is 318218532.

It is a cyclic number.

It is not a de Polignac number, because 235812813 - 2² = 235812809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235812883) 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, 16483 + ... + 27263.

It is an arithmetic number, because the mean of its divisors is an integer number (20572056).

Almost surely, 2^235812813 is an apocalyptic number.

235812813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

235812813 is a deficient number, since it is larger than the sum of its proper divisors (93340083).

235812813 is a wasteful number, since it uses less digits than its factorization.

235812813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11124.

The product of its digits is 11520, while the sum is 33.

The square root of 235812813 is about 15356.1978692644. The cubic root of 235812813 is about 617.8112320274.

The spelling of 235812813 in words is "two hundred thirty-five million, eight hundred twelve thousand, eight hundred thirteen".