23121395 has 16 divisors (see below), whose sum is σ = 30378240. Its totient is φ = 16754400.

The previous prime is 23121391. The next prime is 23121403. The reversal of 23121395 is 59312132.

It is not a de Polignac number, because 23121395 - 2² = 23121391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23121391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19160 + ... + 20330.

It is an arithmetic number, because the mean of its divisors is an integer number (1898640).

Almost surely, 2^23121395 is an apocalyptic number.

23121395 is a deficient number, since it is larger than the sum of its proper divisors (7256845).

23121395 is a wasteful number, since it uses less digits than its factorization.

23121395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546.

The product of its digits is 1620, while the sum is 26.

The square root of 23121395 is about 4808.4711707569. The cubic root of 23121395 is about 284.8861554126.

The spelling of 23121395 in words is "twenty-three million, one hundred twenty-one thousand, three hundred ninety-five".