2100031001 has 4 divisors (see below), whose sum is σ = 2116061904. Its totient is φ = 2084000100.

The previous prime is 2100030997. The next prime is 2100031051. The reversal of 2100031001 is 1001300012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100031001 - 2² = 2100030997 is a prime.

It is a super-2 number, since 2×2100031001² = 8820260410322124002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100031001.

It is not an unprimeable number, because it can be changed into a prime (2100031051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8015255 + ... + 8015516.

It is an arithmetic number, because the mean of its divisors is an integer number (529015476).

Almost surely, 2^2100031001 is an apocalyptic number.

It is an amenable number.

2100031001 is a deficient number, since it is larger than the sum of its proper divisors (16030903).

2100031001 is a wasteful number, since it uses less digits than its factorization.

2100031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16030902.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 2100031001 is about 45826.0951969508. The cubic root of 2100031001 is about 1280.5854664223.

Adding to 2100031001 its reverse (1001300012), we get a palindrome (3101331013).

The spelling of 2100031001 in words is "two billion, one hundred million, thirty-one thousand, one".