2100423231 has 32 divisors (see below), whose sum is σ = 3209768640. Its totient is φ = 1373785920.

The previous prime is 2100423211. The next prime is 2100423257. The reversal of 2100423231 is 1323240012.

2100423231 is a `hidden beast` number, since 2 + 10 + 0 + 423 + 231 = 666.

It is not a de Polignac number, because 2100423231 - 2⁶ = 2100423167 is a prime.

It is a super-2 number, since 2×2100423231² = 8823555498648958722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100423211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106851 + ... + 124971.

It is an arithmetic number, because the mean of its divisors is an integer number (100305270).

Almost surely, 2^2100423231 is an apocalyptic number.

2100423231 is a deficient number, since it is larger than the sum of its proper divisors (1109345409).

2100423231 is an frugal number, since it uses more digits than its factorization.

2100423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18195 (or 18177 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2100423231 is about 45830.3745457093. The cubic root of 2100423231 is about 1280.6651879073.

Adding to 2100423231 its reverse (1323240012), we get a palindrome (3423663243).

The spelling of 2100423231 in words is "two billion, one hundred million, four hundred twenty-three thousand, two hundred thirty-one".