2102131231 has 8 divisors (see below), whose sum is σ = 2140476800. Its totient is φ = 2063990808.

The previous prime is 2102131211. The next prime is 2102131261. The reversal of 2102131231 is 1321312012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102131231 - 2¹³ = 2102123039 is a prime.

It is a super-2 number, since 2×2102131231² = 8837911424691150722, 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 (2102131211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30531 + ... + 71668.

It is an arithmetic number, because the mean of its divisors is an integer number (267559600).

Almost surely, 2^2102131231 is an apocalyptic number.

2102131231 is a deficient number, since it is larger than the sum of its proper divisors (38345569).

2102131231 is a wasteful number, since it uses less digits than its factorization.

2102131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102573.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2102131231 is about 45849.0046893060. The cubic root of 2102131231 is about 1281.0122264587.

Adding to 2102131231 its reverse (1321312012), we get a palindrome (3423443243).

The spelling of 2102131231 in words is "two billion, one hundred two million, one hundred thirty-one thousand, two hundred thirty-one".