31404433344321 has 32 divisors (see below), whose sum is σ = 44398161472000. Its totient is φ = 19689615260928.

The previous prime is 31404433344287. The next prime is 31404433344343. The reversal of 31404433344321 is 12344333440413.

It is not a de Polignac number, because 31404433344321 - 2¹⁴ = 31404433327937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31404433344321.

It is not an unprimeable number, because it can be changed into a prime (31404433344421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76958601 + ... + 77365593.

It is an arithmetic number, because the mean of its divisors is an integer number (1387442546000).

Almost surely, 2^{31404433344321} is an apocalyptic number.

It is an amenable number.

31404433344321 is a deficient number, since it is larger than the sum of its proper divisors (12993728127679).

31404433344321 is a wasteful number, since it uses less digits than its factorization.

31404433344321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416893.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 31404433344321 its reverse (12344333440413), we get a palindrome (43748766784734).

The spelling of 31404433344321 in words is "thirty-one trillion, four hundred four billion, four hundred thirty-three million, three hundred forty-four thousand, three hundred twenty-one".