20341031 has 4 divisors (see below), whose sum is σ = 20360832. Its totient is φ = 20321232.

The previous prime is 20341019. The next prime is 20341037. The reversal of 20341031 is 13014302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20341031 - 2²² = 16146727 is a prime.

It is a super-2 number, since 2×20341031² = 827515084285922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20340997 and 20341015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20341037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8270 + ... + 10443.

It is an arithmetic number, because the mean of its divisors is an integer number (5090208).

Almost surely, 2^20341031 is an apocalyptic number.

20341031 is a deficient number, since it is larger than the sum of its proper divisors (19801).

20341031 is a wasteful number, since it uses less digits than its factorization.

20341031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19800.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20341031 is about 4510.1032138966. The cubic root of 20341031 is about 272.9759088171.

Adding to 20341031 its reverse (13014302), we get a palindrome (33355333).

The spelling of 20341031 in words is "twenty million, three hundred forty-one thousand, thirty-one".