31345113325 has 12 divisors (see below), whose sum is σ = 39918426580. Its totient is φ = 24398357760.

The previous prime is 31345113307. The next prime is 31345113329. The reversal of 31345113325 is 52331154313.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 127170729 + 31217942596 = 11277^2 + 176686^2 .

It is not a de Polignac number, because 31345113325 - 2¹¹ = 31345111277 is a prime.

It is a super-2 number, since 2×31345113325² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31345113329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16942380 + ... + 16944229.

Almost surely, 2^31345113325 is an apocalyptic number.

It is an amenable number.

31345113325 is a deficient number, since it is larger than the sum of its proper divisors (8573313255).

31345113325 is a wasteful number, since it uses less digits than its factorization.

31345113325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33886656 (or 33886651 counting only the distinct ones).

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

Adding to 31345113325 its reverse (52331154313), we get a palindrome (83676267638).

The spelling of 31345113325 in words is "thirty-one billion, three hundred forty-five million, one hundred thirteen thousand, three hundred twenty-five".