231321103320 has 32 divisors (see below), whose sum is σ = 693963310320. Its totient is φ = 61685627520.

The previous prime is 231321103283. The next prime is 231321103331. The reversal of 231321103320 is 23301123132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963837811 + ... + 963838050.

Almost surely, 2^231321103320 is an apocalyptic number.

231321103320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231321103320 is an abundant number, since it is smaller than the sum of its proper divisors (462642207000).

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

231321103320 is a wasteful number, since it uses less digits than its factorization.

231321103320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927675875 (or 1927675871 counting only the distinct ones).

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

Adding to 231321103320 its reverse (23301123132), we get a palindrome (254622226452).

The spelling of 231321103320 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred three thousand, three hundred twenty".