236540423 has 4 divisors (see below), whose sum is σ = 270331920. Its totient is φ = 202748928.

The previous prime is 236540419. The next prime is 236540429. The reversal of 236540423 is 324045632.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 236540423 - 2² = 236540419 is a prime.

It is a super-4 number, since 4×236540423⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236540429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16895738 + ... + 16895751.

It is an arithmetic number, because the mean of its divisors is an integer number (67582980).

Almost surely, 2^236540423 is an apocalyptic number.

236540423 is a deficient number, since it is larger than the sum of its proper divisors (33791497).

236540423 is an equidigital number, since it uses as much as digits as its factorization.

236540423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33791496.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 236540423 is about 15379.8707081692. The cubic root of 236540423 is about 618.4460068057.

The spelling of 236540423 in words is "two hundred thirty-six million, five hundred forty thousand, four hundred twenty-three".