20900371 has 2 divisors, whose sum is σ = 20900372. Its totient is φ = 20900370.

The previous prime is 20900339. The next prime is 20900377. The reversal of 20900371 is 17300902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20900371 - 2⁵ = 20900339 is a prime.

It is not a weakly prime, because it can be changed into another prime (20900377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10450185 + 10450186.

It is an arithmetic number, because the mean of its divisors is an integer number (10450186).

Almost surely, 2^20900371 is an apocalyptic number.

20900371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20900371 is an equidigital number, since it uses as much as digits as its factorization.

20900371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 20900371 is about 4571.6923562287. The cubic root of 20900371 is about 275.4554260711.

The spelling of 20900371 in words is "twenty million, nine hundred thousand, three hundred seventy-one".