20131093 has 2 divisors, whose sum is σ = 20131094. Its totient is φ = 20131092.

The previous prime is 20131091. The next prime is 20131103. The reversal of 20131093 is 39013102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11410884 + 8720209 = 3378^2 + 2953^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131093 - 2¹ = 20131091 is a prime.

Together with 20131091, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20131093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065546 + 10065547.

It is an arithmetic number, because the mean of its divisors is an integer number (10065547).

Almost surely, 2^20131093 is an apocalyptic number.

It is an amenable number.

20131093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131093 is an equidigital number, since it uses as much as digits as its factorization.

20131093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20131093 is about 4486.7686590686. The cubic root of 20131093 is about 272.0335391529.

Adding to 20131093 its reverse (39013102), we get a palindrome (59144195).

The spelling of 20131093 in words is "twenty million, one hundred thirty-one thousand, ninety-three".