321431122241220 has 48 divisors (see below), whose sum is σ = 947375939240640. Its totient is φ = 81203651934336.

The previous prime is 321431122241179. The next prime is 321431122241231. The reversal of 321431122241220 is 22142221134123.

It is a super-2 number, since 2×321431122241220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 140978561247 + ... + 140978563526.

It is an arithmetic number, because the mean of its divisors is an integer number (19736998734180).

Almost surely, 2^{321431122241220} is an apocalyptic number.

321431122241220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321431122241220 is an abundant number, since it is smaller than the sum of its proper divisors (625944816999420).

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

321431122241220 is a wasteful number, since it uses less digits than its factorization.

321431122241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281957124804 (or 281957124802 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 321431122241220 its reverse (22142221134123), we get a palindrome (343573343375343).

The spelling of 321431122241220 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, one hundred twenty-two million, two hundred forty-one thousand, two hundred twenty".