20731034 has 8 divisors (see below), whose sum is σ = 31417428. Its totient is φ = 10258560.

The previous prime is 20731001. The next prime is 20731043. The reversal of 20731034 is 43013702.

It can be written as a sum of positive squares in 2 ways, for example, as 20729809 + 1225 = 4553^2 + 35^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20730997 and 20731015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53237 + ... + 53624.

Almost surely, 2^20731034 is an apocalyptic number.

20731034 is a deficient number, since it is larger than the sum of its proper divisors (10686394).

20731034 is a wasteful number, since it uses less digits than its factorization.

20731034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106960.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20731034 is about 4553.1345246983. The cubic root of 20731034 is about 274.7094849382.

Adding to 20731034 its reverse (43013702), we get a palindrome (63744736).

The spelling of 20731034 in words is "twenty million, seven hundred thirty-one thousand, thirty-four".