2103121031 has 8 divisors (see below), whose sum is σ = 2294675328. Its totient is φ = 1911627000.

The previous prime is 2103120937. The next prime is 2103121043. The reversal of 2103121031 is 1301213012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103121031 is a prime.

It is a super-2 number, since 2×2103121031² = 8846236142069005922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2103120997 and 2103121015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103121231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89486 + ... + 110516.

It is an arithmetic number, because the mean of its divisors is an integer number (286834416).

Almost surely, 2^2103121031 is an apocalyptic number.

2103121031 is a deficient number, since it is larger than the sum of its proper divisors (191554297).

2103121031 is a wasteful number, since it uses less digits than its factorization.

2103121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30133.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2103121031 is about 45859.7975464349. The cubic root of 2103121031 is about 1281.2132521176.

Adding to 2103121031 its reverse (1301213012), we get a palindrome (3404334043).

The spelling of 2103121031 in words is "two billion, one hundred three million, one hundred twenty-one thousand, thirty-one".