20131321230332 has 12 divisors (see below), whose sum is σ = 37939797703416. Its totient is φ = 9291379029360.

The previous prime is 20131321230301. The next prime is 20131321230341. The reversal of 20131321230332 is 23303212313102.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193570396394 + ... + 193570396497.

It is an arithmetic number, because the mean of its divisors is an integer number (3161649808618).

Almost surely, 2^{20131321230332} is an apocalyptic number.

It is an amenable number.

20131321230332 is a deficient number, since it is larger than the sum of its proper divisors (17808476473084).

20131321230332 is a wasteful number, since it uses less digits than its factorization.

20131321230332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387140792908 (or 387140792906 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20131321230332 its reverse (23303212313102), we get a palindrome (43434533543434).

The spelling of 20131321230332 in words is "twenty trillion, one hundred thirty-one billion, three hundred twenty-one million, two hundred thirty thousand, three hundred thirty-two".