20319541 has 16 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 17945200.

The previous prime is 20319503. The next prime is 20319581. The reversal of 20319541 is 14591302.

It is a cyclic number.

It is not a de Polignac number, because 20319541 - 2⁷ = 20319413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20319581) 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, 84900 + ... + 85138.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^20319541 is an apocalyptic number.

It is an amenable number.

20319541 is a deficient number, since it is larger than the sum of its proper divisors (2490059).

20319541 is a wasteful number, since it uses less digits than its factorization.

20319541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20319541 is about 4507.7201554666. The cubic root of 20319541 is about 272.8797432660.

The spelling of 20319541 in words is "twenty million, three hundred nineteen thousand, five hundred forty-one".