13923251 has 2 divisors, whose sum is σ = 13923252. Its totient is φ = 13923250.

The previous prime is 13923241. The next prime is 13923253. The reversal of 13923251 is 15232931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13923251 is a prime.

Together with 13923253, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13923251.

It is not a weakly prime, because it can be changed into another prime (13923253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6961625 + 6961626.

It is an arithmetic number, because the mean of its divisors is an integer number (6961626).

Almost surely, 2^13923251 is an apocalyptic number.

13923251 is a deficient number, since it is larger than the sum of its proper divisors (1).

13923251 is an equidigital number, since it uses as much as digits as its factorization.

13923251 is an evil number, because the sum of its binary digits is even.

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

The square root of 13923251 is about 3731.3872755317. The cubic root of 13923251 is about 240.5730000863.

The spelling of 13923251 in words is "thirteen million, nine hundred twenty-three thousand, two hundred fifty-one".