31542540425140 has 48 divisors (see below), whose sum is σ = 70640340321600. Its totient is φ = 11789408236032.

The previous prime is 31542540425131. The next prime is 31542540425141. The reversal of 31542540425140 is 4152404524513.

It is a junction number, because it is equal to n+sod(n) for n = 31542540425093 and 31542540425102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31542540425141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333665610 + ... + 333760129.

It is an arithmetic number, because the mean of its divisors is an integer number (1471673756700).

Almost surely, 2^{31542540425140} is an apocalyptic number.

It is an amenable number.

31542540425140 is an abundant number, since it is smaller than the sum of its proper divisors (39097799896460).

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

31542540425140 is a wasteful number, since it uses less digits than its factorization.

31542540425140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667425904 (or 667425902 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 31542540425140 its reverse (4152404524513), we get a palindrome (35694944949653).

The spelling of 31542540425140 in words is "thirty-one trillion, five hundred forty-two billion, five hundred forty million, four hundred twenty-five thousand, one hundred forty".