20103331 has 4 divisors (see below), whose sum is σ = 20119464. Its totient is φ = 20087200.

The previous prime is 20103329. The next prime is 20103341. The reversal of 20103331 is 13330102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13330102 = 2 ⋅6665051.

It is a cyclic number.

It is not a de Polignac number, because 20103331 - 2¹ = 20103329 is a prime.

It is a super-2 number, since 2×20103331² = 808287834591122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20103301) 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, 6025 + ... + 8746.

It is an arithmetic number, because the mean of its divisors is an integer number (5029866).

Almost surely, 2^20103331 is an apocalyptic number.

20103331 is a deficient number, since it is larger than the sum of its proper divisors (16133).

20103331 is a wasteful number, since it uses less digits than its factorization.

20103331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16132.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 20103331 is about 4483.6738284581. The cubic root of 20103331 is about 271.9084313670.

Adding to 20103331 its reverse (13330102), we get a palindrome (33433433).

The spelling of 20103331 in words is "twenty million, one hundred three thousand, three hundred thirty-one".