233540413 has 4 divisors (see below), whose sum is σ = 243694368. Its totient is φ = 223386460.

The previous prime is 233540399. The next prime is 233540423. The reversal of 233540413 is 314045332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233540413 is a prime.

It is a super-2 number, since 2×233540413² = 109082249008421138, which contains 22 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 (233540423) 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, 5076943 + ... + 5076988.

It is an arithmetic number, because the mean of its divisors is an integer number (60923592).

Almost surely, 2^233540413 is an apocalyptic number.

233540413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

233540413 is a deficient number, since it is larger than the sum of its proper divisors (10153955).

233540413 is a wasteful number, since it uses less digits than its factorization.

233540413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10153954.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 233540413 is about 15282.0290864793. The cubic root of 233540413 is about 615.8203193896.

Adding to 233540413 its reverse (314045332), we get a palindrome (547585745).

The spelling of 233540413 in words is "two hundred thirty-three million, five hundred forty thousand, four hundred thirteen".