331622722432 has 32 divisors (see below), whose sum is σ = 662069439720. Its totient is φ = 165456274944.

The previous prime is 331622722427. The next prime is 331622722433. The reversal of 331622722432 is 234227226133.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×331622722432² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331622722391 and 331622722400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331622722433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714103 + ... + 2833654.

Almost surely, 2^331622722432 is an apocalyptic number.

331622722432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

331622722432 is a deficient number, since it is larger than the sum of its proper divisors (330446717288).

331622722432 is an equidigital number, since it uses as much as digits as its factorization.

331622722432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548238 (or 5548226 counting only the distinct ones).

The product of its digits is 145152, while the sum is 37.

Adding to 331622722432 its reverse (234227226133), we get a palindrome (565849948565).

The spelling of 331622722432 in words is "three hundred thirty-one billion, six hundred twenty-two million, seven hundred twenty-two thousand, four hundred thirty-two".