31421000454432 has 48 divisors (see below), whose sum is σ = 82482566991552. Its totient is φ = 10473356875520.

The previous prime is 31421000454427. The next prime is 31421000454433. The reversal of 31421000454432 is 23445400012413.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 31421000454393 and 31421000454402.

It is not an unprimeable number, because it can be changed into a prime (31421000454433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570443 + ... + 8081354.

It is an arithmetic number, because the mean of its divisors is an integer number (1718386812324).

Almost surely, 2^{31421000454432} is an apocalyptic number.

31421000454432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31421000454432 is an abundant number, since it is smaller than the sum of its proper divisors (51061566537120).

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

31421000454432 is a wasteful number, since it uses less digits than its factorization.

31421000454432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9685721 (or 9685713 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 31421000454432 its reverse (23445400012413), we get a palindrome (54866400466845).

The spelling of 31421000454432 in words is "thirty-one trillion, four hundred twenty-one billion, four hundred fifty-four thousand, four hundred thirty-two".