20071023 has 16 divisors (see below), whose sum is σ = 30890496. Its totient is φ = 11354400.

The previous prime is 20070997. The next prime is 20071027. The reversal of 20071023 is 32017002.

It is not a de Polignac number, because 20071023 - 2⁵ = 20070991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20070993 and 20071011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20071027) 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, 2611 + ... + 6852.

It is an arithmetic number, because the mean of its divisors is an integer number (1930656).

Almost surely, 2^20071023 is an apocalyptic number.

20071023 is a deficient number, since it is larger than the sum of its proper divisors (10819473).

20071023 is a wasteful number, since it uses less digits than its factorization.

20071023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9574.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20071023 is about 4480.0695307104. The cubic root of 20071023 is about 271.7626922052.

Adding to 20071023 its reverse (32017002), we get a palindrome (52088025).

The spelling of 20071023 in words is "twenty million, seventy-one thousand, twenty-three".