2103404331 has 24 divisors (see below), whose sum is σ = 3264362640. Its totient is φ = 1201230912.

The previous prime is 2103404311. The next prime is 2103404363. The reversal of 2103404331 is 1334043012.

It is not a de Polignac number, because 2103404331 - 2¹¹ = 2103402283 is a prime.

It is a super-2 number, since 2×2103404331² = 8848619559339115122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2103404298 and 2103404307.

It is not an unprimeable number, because it can be changed into a prime (2103404311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336325 + ... + 342521.

It is an arithmetic number, because the mean of its divisors is an integer number (136015110).

Almost surely, 2^2103404331 is an apocalyptic number.

2103404331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2103404331 is a deficient number, since it is larger than the sum of its proper divisors (1160958309).

2103404331 is a wasteful number, since it uses less digits than its factorization.

2103404331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8523 (or 8516 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2103404331 is about 45862.8862044246. The cubic root of 2103404331 is about 1281.2707779585.

Adding to 2103404331 its reverse (1334043012), we get a palindrome (3437447343).

The spelling of 2103404331 in words is "two billion, one hundred three million, four hundred four thousand, three hundred thirty-one".