20069231 has 16 divisors (see below), whose sum is σ = 26155584. Its totient is φ = 14943744.

The previous prime is 20069219. The next prime is 20069243. The reversal of 20069231 is 13296002.

It is an interprime number because it is at equal distance from previous prime (20069219) and next prime (20069243).

It is a cyclic number.

It is not a de Polignac number, because 20069231 - 2⁶ = 20069167 is a prime.

It is a super-2 number, since 2×20069231² = 805548065862722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20069197 and 20069206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20069251) 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, 4940 + ... + 8033.

It is an arithmetic number, because the mean of its divisors is an integer number (1634724).

Almost surely, 2^20069231 is an apocalyptic number.

20069231 is a deficient number, since it is larger than the sum of its proper divisors (6086353).

20069231 is a wasteful number, since it uses less digits than its factorization.

20069231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13010.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 20069231 is about 4479.8695293502. The cubic root of 20069231 is about 271.7546040402.

The spelling of 20069231 in words is "twenty million, sixty-nine thousand, two hundred thirty-one".