20924311 has 2 divisors, whose sum is σ = 20924312. Its totient is φ = 20924310.

The previous prime is 20924269. The next prime is 20924317. The reversal of 20924311 is 11342902.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20924311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20924317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10462155 + 10462156.

It is an arithmetic number, because the mean of its divisors is an integer number (10462156).

Almost surely, 2^20924311 is an apocalyptic number.

20924311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20924311 is an equidigital number, since it uses as much as digits as its factorization.

20924311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20924311 is about 4574.3098933063. The cubic root of 20924311 is about 275.5605579638.

The spelling of 20924311 in words is "twenty million, nine hundred twenty-four thousand, three hundred eleven".