2123020231 has 16 divisors (see below), whose sum is σ = 2280918528. Its totient is φ = 1968918400.

The previous prime is 2123020219. The next prime is 2123020259. The reversal of 2123020231 is 1320203212.

It is a cyclic number.

It is not a de Polignac number, because 2123020231 - 2⁹ = 2123019719 is a prime.

It is a super-2 number, since 2×2123020231² = 9014429802470586722, 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 (2123020201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606396 + ... + 609886.

It is an arithmetic number, because the mean of its divisors is an integer number (142557408).

Almost surely, 2^2123020231 is an apocalyptic number.

2123020231 is a deficient number, since it is larger than the sum of its proper divisors (157898297).

2123020231 is a wasteful number, since it uses less digits than its factorization.

2123020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2123020231 is about 46076.2436728516. The cubic root of 2123020231 is about 1285.2414129542.

Adding to 2123020231 its reverse (1320203212), we get a palindrome (3443223443).

The spelling of 2123020231 in words is "two billion, one hundred twenty-three million, twenty thousand, two hundred thirty-one".