31320125351345 has 16 divisors (see below), whose sum is σ = 39795813848448. Its totient is φ = 23581719555840.

The previous prime is 31320125351341. The next prime is 31320125351363. The reversal of 31320125351345 is 54315352102313.

It is not a de Polignac number, because 31320125351345 - 2² = 31320125351341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31320125351299 and 31320125351308.

It is not an unprimeable number, because it can be changed into a prime (31320125351341) 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, 272540 + ... + 7919250.

It is an arithmetic number, because the mean of its divisors is an integer number (2487238365528).

Almost surely, 2^{31320125351345} is an apocalyptic number.

It is an amenable number.

31320125351345 is a deficient number, since it is larger than the sum of its proper divisors (8475688497103).

31320125351345 is a wasteful number, since it uses less digits than its factorization.

31320125351345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7694920.

The product of its (nonzero) digits is 162000, while the sum is 38.

Adding to 31320125351345 its reverse (54315352102313), we get a palindrome (85635477453658).

The spelling of 31320125351345 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty-five million, three hundred fifty-one thousand, three hundred forty-five".