2123301031 has 4 divisors (see below), whose sum is σ = 2125568032. Its totient is φ = 2121034032.

The previous prime is 2123301017. The next prime is 2123301077. The reversal of 2123301031 is 1301033212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2123301031 - 2⁷ = 2123300903 is a prime.

It is a super-2 number, since 2×2123301031² = 9016814536491325922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123300996 and 2123301014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123301331) 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, 1132095 + ... + 1133968.

It is an arithmetic number, because the mean of its divisors is an integer number (531392008).

Almost surely, 2^2123301031 is an apocalyptic number.

2123301031 is a deficient number, since it is larger than the sum of its proper divisors (2267001).

2123301031 is an equidigital number, since it uses as much as digits as its factorization.

2123301031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267000.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2123301031 is about 46079.2906954957. The cubic root of 2123301031 is about 1285.2980743515.

Adding to 2123301031 its reverse (1301033212), we get a palindrome (3424334243).

The spelling of 2123301031 in words is "two billion, one hundred twenty-three million, three hundred one thousand, thirty-one".