20260031 has 4 divisors (see below), whose sum is σ = 22101864. Its totient is φ = 18418200.

The previous prime is 20260021. The next prime is 20260091. The reversal of 20260031 is 13006202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20260031 is a prime.

It is a super-2 number, since 2×20260031² = 820937712241922, 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 = 20259988 and 20260015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20260001) 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, 920900 + ... + 920921.

It is an arithmetic number, because the mean of its divisors is an integer number (5525466).

Almost surely, 2^20260031 is an apocalyptic number.

20260031 is a deficient number, since it is larger than the sum of its proper divisors (1841833).

20260031 is a wasteful number, since it uses less digits than its factorization.

20260031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841832.

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

The square root of 20260031 is about 4501.1144175637. The cubic root of 20260031 is about 272.6130877588.

Adding to 20260031 its reverse (13006202), we get a palindrome (33266233).

The spelling of 20260031 in words is "twenty million, two hundred sixty thousand, thirty-one".