20293771 has 2 divisors, whose sum is σ = 20293772. Its totient is φ = 20293770.

The previous prime is 20293739. The next prime is 20293787. The reversal of 20293771 is 17739202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20293771 - 2⁵ = 20293739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20293171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10146885 + 10146886.

It is an arithmetic number, because the mean of its divisors is an integer number (10146886).

Almost surely, 2^20293771 is an apocalyptic number.

20293771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20293771 is an equidigital number, since it uses as much as digits as its factorization.

20293771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 20293771 is about 4504.8608191597. The cubic root of 20293771 is about 272.7643357071.

The spelling of 20293771 in words is "twenty million, two hundred ninety-three thousand, seven hundred seventy-one".