231130023213 has 16 divisors (see below), whose sum is σ = 313886114496. Its totient is φ = 151246677120.

The previous prime is 231130023211. The next prime is 231130023277. The reversal of 231130023213 is 312320031132.

It is not a de Polignac number, because 231130023213 - 2¹ = 231130023211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231130023213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231130023211) 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, 1989606 + ... + 2102567.

It is an arithmetic number, because the mean of its divisors is an integer number (19617882156).

Almost surely, 2^231130023213 is an apocalyptic number.

It is an amenable number.

231130023213 is a deficient number, since it is larger than the sum of its proper divisors (82756091283).

231130023213 is a wasteful number, since it uses less digits than its factorization.

231130023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092524.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231130023213 its reverse (312320031132), we get a palindrome (543450054345).

The spelling of 231130023213 in words is "two hundred thirty-one billion, one hundred thirty million, twenty-three thousand, two hundred thirteen".