23351481 has 6 divisors (see below), whose sum is σ = 33729930. Its totient is φ = 15567648.

The previous prime is 23351479. The next prime is 23351483. The reversal of 23351481 is 18415332.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23351479) and next prime (23351483).

It can be written as a sum of positive squares in only one way, i.e., 12362256 + 10989225 = 3516^2 + 3315^2 .

It is not a de Polignac number, because 23351481 - 2¹ = 23351479 is a prime.

It is a super-2 number, since 2×23351481² = 1090583329786722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23351483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1297296 + ... + 1297313.

It is an arithmetic number, because the mean of its divisors is an integer number (5621655).

Almost surely, 2^23351481 is an apocalyptic number.

It is an amenable number.

23351481 is a deficient number, since it is larger than the sum of its proper divisors (10378449).

23351481 is a wasteful number, since it uses less digits than its factorization.

23351481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594615 (or 2594612 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 23351481 is about 4832.3370122540. The cubic root of 23351481 is about 285.8280259412.

It can be divided in two parts, 23351 and 481, that added together give a palindrome (23832).

The spelling of 23351481 in words is "twenty-three million, three hundred fifty-one thousand, four hundred eighty-one".