20313655 has 16 divisors (see below), whose sum is σ = 25147584. Its totient is φ = 15742720.

The previous prime is 20313653. The next prime is 20313661. The reversal of 20313655 is 55631302.

It is a happy number.

It is not a de Polignac number, because 20313655 - 2¹ = 20313653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313653) 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, 40134 + ... + 40636.

It is an arithmetic number, because the mean of its divisors is an integer number (1571724).

Almost surely, 2^20313655 is an apocalyptic number.

20313655 is a deficient number, since it is larger than the sum of its proper divisors (4833929).

20313655 is a wasteful number, since it uses less digits than its factorization.

20313655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 20313655 is about 4507.0672282539. The cubic root of 20313655 is about 272.8533921905.

Adding to 20313655 its reverse (55631302), we get a palindrome (75944957).

The spelling of 20313655 in words is "twenty million, three hundred thirteen thousand, six hundred fifty-five".