31320125351320 has 64 divisors (see below), whose sum is σ = 77942183094720. Its totient is φ = 11251803861504.

The previous prime is 31320125351269. The next prime is 31320125351323. The reversal of 31320125351320 is 2315352102313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320125351323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813913332 + ... + 813951811.

It is an arithmetic number, because the mean of its divisors is an integer number (1217846610855).

Almost surely, 2^{31320125351320} is an apocalyptic number.

It is an amenable number.

31320125351320 is an abundant number, since it is smaller than the sum of its proper divisors (46622057743400).

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

31320125351320 is a wasteful number, since it uses less digits than its factorization.

31320125351320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627865204 (or 1627865200 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 31320125351320 its reverse (2315352102313), we get a palindrome (33635477453633).

The spelling of 31320125351320 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty-five million, three hundred fifty-one thousand, three hundred twenty".