20983313 has 8 divisors (see below), whose sum is σ = 22870848. Its totient is φ = 19134864.

The previous prime is 20983307. The next prime is 20983351. The reversal of 20983313 is 31338902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20983313 - 2⁴ = 20983297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20983363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8645 + ... + 10802.

It is an arithmetic number, because the mean of its divisors is an integer number (2858856).

Almost surely, 2^20983313 is an apocalyptic number.

It is an amenable number.

20983313 is a deficient number, since it is larger than the sum of its proper divisors (1887535).

20983313 is a wasteful number, since it uses less digits than its factorization.

20983313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19543.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20983313 is about 4580.7546321540. The cubic root of 20983313 is about 275.8193218169.

The spelling of 20983313 in words is "twenty million, nine hundred eighty-three thousand, three hundred thirteen".