23019481 has 4 divisors (see below), whose sum is σ = 24020352. Its totient is φ = 22018612.

The previous prime is 23019473. The next prime is 23019487. The reversal of 23019481 is 18491032.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23019481 - 2³ = 23019473 is a prime.

It is a super-2 number, since 2×23019481² = 1059793011018722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23019487) 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, 500401 + ... + 500446.

It is an arithmetic number, because the mean of its divisors is an integer number (6005088).

Almost surely, 2^23019481 is an apocalyptic number.

It is an amenable number.

23019481 is a deficient number, since it is larger than the sum of its proper divisors (1000871).

23019481 is a wasteful number, since it uses less digits than its factorization.

23019481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000870.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 23019481 is about 4797.8621280733. The cubic root of 23019481 is about 284.4669671712.

The spelling of 23019481 in words is "twenty-three million, nineteen thousand, four hundred eighty-one".