23109613 has 8 divisors (see below), whose sum is σ = 24511032. Its totient is φ = 21712896.

The previous prime is 23109587. The next prime is 23109631. The reversal of 23109613 is 31690132.

It can be written as a sum of positive squares in 4 ways, for example, as 660969 + 22448644 = 813^2 + 4738^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23109613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23109673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18381 + ... + 19597.

It is an arithmetic number, because the mean of its divisors is an integer number (3063879).

Almost surely, 2^23109613 is an apocalyptic number.

It is an amenable number.

23109613 is a deficient number, since it is larger than the sum of its proper divisors (1401419).

23109613 is a wasteful number, since it uses less digits than its factorization.

23109613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 23109613 is about 4807.2458851197. The cubic root of 23109613 is about 284.8377572519.

Adding to 23109613 its reverse (31690132), we get a palindrome (54799745).

The spelling of 23109613 in words is "twenty-three million, one hundred nine thousand, six hundred thirteen".