2131023213 has 24 divisors (see below), whose sum is σ = 3365693760. Its totient is φ = 1288560960.

The previous prime is 2131023187. The next prime is 2131023217. The reversal of 2131023213 is 3123201312.

It is not a de Polignac number, because 2131023213 - 2⁶ = 2131023149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131023217) 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, 18945 + ... + 67977.

It is an arithmetic number, because the mean of its divisors is an integer number (140237240).

Almost surely, 2^2131023213 is an apocalyptic number.

It is an amenable number.

2131023213 is a deficient number, since it is larger than the sum of its proper divisors (1234670547).

2131023213 is a wasteful number, since it uses less digits than its factorization.

2131023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49489 (or 49486 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2131023213 is about 46163.0069752827. The cubic root of 2131023213 is about 1286.8543456785.

Adding to 2131023213 its reverse (3123201312), we get a palindrome (5254224525).

The spelling of 2131023213 in words is "two billion, one hundred thirty-one million, twenty-three thousand, two hundred thirteen".