23135481 has 6 divisors (see below), whose sum is σ = 33417930. Its totient is φ = 15423648.

The previous prime is 23135479. The next prime is 23135501. The reversal of 23135481 is 18453132.

It is a happy number.

23135481 is a `hidden beast` number, since 231 + 354 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23040000 + 95481 = 4800^2 + 309^2 .

It is not a de Polignac number, because 23135481 - 2¹ = 23135479 is a prime.

It is a super-2 number, since 2×23135481² = 1070500962202722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23135381) 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, 1285296 + ... + 1285313.

It is an arithmetic number, because the mean of its divisors is an integer number (5569655).

Almost surely, 2^23135481 is an apocalyptic number.

It is an amenable number.

23135481 is a deficient number, since it is larger than the sum of its proper divisors (10282449).

23135481 is a wasteful number, since it uses less digits than its factorization.

23135481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570615 (or 2570612 counting only the distinct ones).

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

The square root of 23135481 is about 4809.9356544553. The cubic root of 23135481 is about 284.9439963827.

The spelling of 23135481 in words is "twenty-three million, one hundred thirty-five thousand, four hundred eighty-one".