31201440454432 has 48 divisors (see below), whose sum is σ = 66308908357440. Its totient is φ = 14407861549312.

The previous prime is 31201440454417. The next prime is 31201440454451. The reversal of 31201440454432 is 23445404410213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31201440454391 and 31201440454400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730896958 + ... + 730939645.

It is an arithmetic number, because the mean of its divisors is an integer number (1381435590780).

Almost surely, 2^{31201440454432} is an apocalyptic number.

31201440454432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31201440454432 is an abundant number, since it is smaller than the sum of its proper divisors (35107467903008).

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

31201440454432 is a wasteful number, since it uses less digits than its factorization.

31201440454432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461836665 (or 1461836657 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 31201440454432 its reverse (23445404410213), we get a palindrome (54646844864645).

The spelling of 31201440454432 in words is "thirty-one trillion, two hundred one billion, four hundred forty million, four hundred fifty-four thousand, four hundred thirty-two".