31421030444032 has 88 divisors (see below), whose sum is σ = 63643491525600. Its totient is φ = 15503087271936.

The previous prime is 31421030444009. The next prime is 31421030444101. The reversal of 31421030444032 is 23044403012413.

It is a junction number, because it is equal to n+sod(n) for n = 31421030443985 and 31421030444003.

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, 45498694 + ... + 46184122.

Almost surely, 2^{31421030444032} is an apocalyptic number.

31421030444032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31421030444032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31821745762800).

31421030444032 is an abundant number, since it is smaller than the sum of its proper divisors (32222461081568).

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

31421030444032 is an equidigital number, since it uses as much as digits as its factorization.

31421030444032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686041 (or 686023 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 31421030444032 its reverse (23044403012413), we get a palindrome (54465433456445).

The spelling of 31421030444032 in words is "thirty-one trillion, four hundred twenty-one billion, thirty million, four hundred forty-four thousand, thirty-two".