20270031 has 16 divisors (see below), whose sum is σ = 27847680. Its totient is φ = 13106880.

The previous prime is 20270027. The next prime is 20270039. The reversal of 20270031 is 13007202.

It is not a de Polignac number, because 20270031 - 2² = 20270027 is a prime.

It is a super-2 number, since 2×20270031² = 821748313481922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270039) 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, 27060 + ... + 27798.

It is an arithmetic number, because the mean of its divisors is an integer number (1740480).

Almost surely, 2^20270031 is an apocalyptic number.

20270031 is a deficient number, since it is larger than the sum of its proper divisors (7577649).

20270031 is a wasteful number, since it uses less digits than its factorization.

20270031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006.

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

The square root of 20270031 is about 4502.2251165396. The cubic root of 20270031 is about 272.6579327458.

Adding to 20270031 its reverse (13007202), we get a palindrome (33277233).

The spelling of 20270031 in words is "twenty million, two hundred seventy thousand, thirty-one".