2102001231 has 24 divisors (see below), whose sum is σ = 3083472000. Its totient is φ = 1272760720.

The previous prime is 2102001203. The next prime is 2102001233. The reversal of 2102001231 is 1321002012.

It is not a de Polignac number, because 2102001231 - 2¹³ = 2101993039 is a prime.

It is a super-2 number, since 2×2102001231² = 8836818350251030722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102001233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 542206 + ... + 546068.

It is an arithmetic number, because the mean of its divisors is an integer number (128478000).

Almost surely, 2^2102001231 is an apocalyptic number.

2102001231 is a deficient number, since it is larger than the sum of its proper divisors (981470769).

2102001231 is a wasteful number, since it uses less digits than its factorization.

2102001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387 (or 5376 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2102001231 is about 45847.5869703085. The cubic root of 2102001231 is about 1280.9858191282.

Adding to 2102001231 its reverse (1321002012), we get a palindrome (3423003243).

The spelling of 2102001231 in words is "two billion, one hundred two million, one thousand, two hundred thirty-one".