31525345513241 has 4 divisors (see below), whose sum is σ = 31595557864500. Its totient is φ = 31455133161984.

The previous prime is 31525345513217. The next prime is 31525345513303. The reversal of 31525345513241 is 14231554352513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9060551505625 + 22464794007616 = 3010075^2 + 4739704^2 .

It is a cyclic number.

It is not a de Polignac number, because 31525345513241 - 2¹⁰ = 31525345512217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31525345513192 and 31525345513201.

It is not an unprimeable number, because it can be changed into a prime (31525345513201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35106174956 + ... + 35106175853.

It is an arithmetic number, because the mean of its divisors is an integer number (7898889466125).

Almost surely, 2^{31525345513241} is an apocalyptic number.

It is an amenable number.

31525345513241 is a deficient number, since it is larger than the sum of its proper divisors (70212351259).

31525345513241 is an equidigital number, since it uses as much as digits as its factorization.

31525345513241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70212351258.

The product of its digits is 1080000, while the sum is 44.

Adding to 31525345513241 its reverse (14231554352513), we get a palindrome (45756899865754).

The spelling of 31525345513241 in words is "thirty-one trillion, five hundred twenty-five billion, three hundred forty-five million, five hundred thirteen thousand, two hundred forty-one".