31320350454450 has 72 divisors (see below), whose sum is σ = 78557025095568. Its totient is φ = 8258249394560.

The previous prime is 31320350454391. The next prime is 31320350454517. The reversal of 31320350454450 is 5445405302313.

It is a junction number, because it is equal to n+sod(n) for n = 31320350454399 and 31320350454408.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11992152 + ... + 14368451.

It is an arithmetic number, because the mean of its divisors is an integer number (1091069792994).

Almost surely, 2^{31320350454450} is an apocalyptic number.

31320350454450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31320350454450 is an abundant number, since it is smaller than the sum of its proper divisors (47236674641118).

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

31320350454450 is a wasteful number, since it uses less digits than its factorization.

31320350454450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26360796 (or 26360702 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 39.

Adding to 31320350454450 its reverse (5445405302313), we get a palindrome (36765755756763).

The spelling of 31320350454450 in words is "thirty-one trillion, three hundred twenty billion, three hundred fifty million, four hundred fifty-four thousand, four hundred fifty".