23148111 has 24 divisors (see below), whose sum is σ = 36112000. Its totient is φ = 12920112.

The previous prime is 23148109. The next prime is 23148113. The reversal of 23148111 is 11184132.

23148111 = 449² + 450² + ... + 542².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23148109) and next prime (23148113).

It is not a de Polignac number, because 23148111 - 2¹ = 23148109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23148113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46140 + ... + 46638.

Almost surely, 2^23148111 is an apocalyptic number.

23148111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23148111 is a deficient number, since it is larger than the sum of its proper divisors (12963889).

23148111 is an equidigital number, since it uses as much as digits as its factorization.

23148111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 556 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

The square root of 23148111 is about 4811.2483826965. The cubic root of 23148111 is about 284.9958386588.

The spelling of 23148111 in words is "twenty-three million, one hundred forty-eight thousand, one hundred eleven".