23154871 has 4 divisors (see below), whose sum is σ = 23194512. Its totient is φ = 23115232.

The previous prime is 23154869. The next prime is 23154881. The reversal of 23154871 is 17845132.

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 23154871 - 2¹ = 23154869 is a prime.

It is a super-2 number, since 2×23154871² = 1072296102053282, 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 (23154851) 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, 18931 + ... + 20116.

It is an arithmetic number, because the mean of its divisors is an integer number (5798628).

Almost surely, 2^23154871 is an apocalyptic number.

23154871 is a deficient number, since it is larger than the sum of its proper divisors (39641).

23154871 is an equidigital number, since it uses as much as digits as its factorization.

23154871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39640.

The product of its digits is 6720, while the sum is 31.

The square root of 23154871 is about 4811.9508517856. The cubic root of 23154871 is about 285.0235786381.

It can be divided in two parts, 23154 and 871, that added together give a square (24025 = 155²).

The spelling of 23154871 in words is "twenty-three million, one hundred fifty-four thousand, eight hundred seventy-one".