2123100031 has 8 divisors (see below), whose sum is σ = 2385825120. Its totient is φ = 1874576352.

The previous prime is 2123100019. The next prime is 2123100041. The reversal of 2123100031 is 1300013212.

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

It is a cyclic number.

It is not a de Polignac number, because 2123100031 - 2²⁹ = 1586229119 is a prime.

It is a super-2 number, since 2×2123100031² = 9015107483264401922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123099984 and 2123100020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123100011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3550036 + ... + 3550633.

It is an arithmetic number, because the mean of its divisors is an integer number (298228140).

Almost surely, 2^2123100031 is an apocalyptic number.

2123100031 is a deficient number, since it is larger than the sum of its proper divisors (262725089).

2123100031 is a wasteful number, since it uses less digits than its factorization.

2123100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100705.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2123100031 is about 46077.1096207217. The cubic root of 2123100031 is about 1285.2575159534.

Adding to 2123100031 its reverse (1300013212), we get a palindrome (3423113243).

The spelling of 2123100031 in words is "two billion, one hundred twenty-three million, one hundred thousand, thirty-one".