20793131 has 8 divisors (see below), whose sum is σ = 21436128. Its totient is φ = 20160000.

The previous prime is 20793121. The next prime is 20793133. The reversal of 20793131 is 13139702.

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 20793131 - 2⁶ = 20793067 is a prime.

It is a super-2 number, since 2×20793131² = 864708593566322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20793131.

It is not an unprimeable number, because it can be changed into a prime (20793133) 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, 1931 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (2679516).

Almost surely, 2^20793131 is an apocalyptic number.

20793131 is a deficient number, since it is larger than the sum of its proper divisors (642997).

20793131 is an equidigital number, since it uses as much as digits as its factorization.

20793131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 20793131 is about 4559.9485742714. The cubic root of 20793131 is about 274.9834965303.

The spelling of 20793131 in words is "twenty million, seven hundred ninety-three thousand, one hundred thirty-one".