31542145245 has 24 divisors (see below), whose sum is σ = 58878672216. Its totient is φ = 15528440448.

The previous prime is 31542145199. The next prime is 31542145259. The reversal of 31542145245 is 54254124513.

31542145245 is a `hidden beast` number, since 31 + 542 + 1 + 45 + 2 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1017163449 + 30524981796 = 31893^2 + 174714^2 .

It is not a de Polignac number, because 31542145245 - 2⁶ = 31542145181 is a prime.

It is a super-3 number, since 3×31542145245³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 26958514 + ... + 26959683.

It is an arithmetic number, because the mean of its divisors is an integer number (2453278009).

Almost surely, 2^31542145245 is an apocalyptic number.

It is an amenable number.

31542145245 is a deficient number, since it is larger than the sum of its proper divisors (27336526971).

31542145245 is a wasteful number, since it uses less digits than its factorization.

31542145245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53918221 (or 53918218 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

Adding to 31542145245 its reverse (54254124513), we get a palindrome (85796269758).

The spelling of 31542145245 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-five thousand, two hundred forty-five".