2103113121231 has 16 divisors (see below), whose sum is σ = 2984172469344. Its totient is φ = 1312901904384.

The previous prime is 2103113121227. The next prime is 2103113121247. The reversal of 2103113121231 is 1321213113012.

It is not a de Polignac number, because 2103113121231 - 2² = 2103113121227 is a prime.

It is a super-2 number, since 2×2103113121231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2103113121198 and 2103113121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103113121251) 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, 104653690 + ... + 104673783.

It is an arithmetic number, because the mean of its divisors is an integer number (186510779334).

Almost surely, 2^{2103113121231} is an apocalyptic number.

2103113121231 is a deficient number, since it is larger than the sum of its proper divisors (881059348113).

2103113121231 is a wasteful number, since it uses less digits than its factorization.

2103113121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209327690.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2103113121231 its reverse (1321213113012), we get a palindrome (3424326234243).

The spelling of 2103113121231 in words is "two trillion, one hundred three billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-one".