2123001031 has 4 divisors (see below), whose sum is σ = 2172373192. Its totient is φ = 2073628872.

The previous prime is 2123001029. The next prime is 2123001037. The reversal of 2123001031 is 1301003212.

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 2123001031 - 2¹ = 2123001029 is a prime.

It is a super-2 number, since 2×2123001031² = 9014266755254125922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123001037) 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, 24686016 + ... + 24686101.

It is an arithmetic number, because the mean of its divisors is an integer number (543093298).

Almost surely, 2^2123001031 is an apocalyptic number.

2123001031 is a deficient number, since it is larger than the sum of its proper divisors (49372161).

2123001031 is an equidigital number, since it uses as much as digits as its factorization.

2123001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49372160.

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

The square root of 2123001031 is about 46076.0353220630. The cubic root of 2123001031 is about 1285.2375384881.

Adding to 2123001031 its reverse (1301003212), we get a palindrome (3424004243).

The spelling of 2123001031 in words is "two billion, one hundred twenty-three million, one thousand, thirty-one".