2031231330520 has 64 divisors (see below), whose sum is σ = 5227589793600. Its totient is φ = 695832368640.

The previous prime is 2031231330511. The next prime is 2031231330547. The reversal of 2031231330520 is 250331321302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2740615 + ... + 3401974.

It is an arithmetic number, because the mean of its divisors is an integer number (81681090525).

Almost surely, 2^{2031231330520} is an apocalyptic number.

2031231330520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031231330520 is an abundant number, since it is smaller than the sum of its proper divisors (3196358463080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2031231330520 is a wasteful number, since it uses less digits than its factorization.

2031231330520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143788 (or 6143784 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 2031231330520 its reverse (250331321302), we get a palindrome (2281562651822).

The spelling of 2031231330520 in words is "two trillion, thirty-one billion, two hundred thirty-one million, three hundred thirty thousand, five hundred twenty".