23140311 has 8 divisors (see below), whose sum is σ = 30891264. Its totient is φ = 15408120.

The previous prime is 23140283. The next prime is 23140319. The reversal of 23140311 is 11304132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23140311 - 2⁵ = 23140279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23140319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501 + ... + 6966.

It is an arithmetic number, because the mean of its divisors is an integer number (3861408).

Almost surely, 2^23140311 is an apocalyptic number.

23140311 is a deficient number, since it is larger than the sum of its proper divisors (7750953).

23140311 is an equidigital number, since it uses as much as digits as its factorization.

23140311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9381.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 23140311 is about 4810.4377139716. The cubic root of 23140311 is about 284.9638242787.

Adding to 23140311 its reverse (11304132), we get a palindrome (34444443).

The spelling of 23140311 in words is "twenty-three million, one hundred forty thousand, three hundred eleven".