31540053042 has 96 divisors (see below), whose sum is σ = 73993675392. Its totient is φ = 9683131392.

The previous prime is 31540053023. The next prime is 31540053047. The reversal of 31540053042 is 24035004513.

31540053042 is a `hidden beast` number, since 31 + 540 + 0 + 53 + 0 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31540052997 and 31540053015.

It is not an unprimeable number, because it can be changed into a prime (31540053047) 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 47 ways as a sum of consecutive naturals, for example, 1475233 + ... + 1496459.

It is an arithmetic number, because the mean of its divisors is an integer number (770767452).

Almost surely, 2^31540053042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31540053042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36996837696).

31540053042 is an abundant number, since it is smaller than the sum of its proper divisors (42453622350).

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

31540053042 is a wasteful number, since it uses less digits than its factorization.

31540053042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21392 (or 21389 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 31540053042 its reverse (24035004513), we get a palindrome (55575057555).

The spelling of 31540053042 in words is "thirty-one billion, five hundred forty million, fifty-three thousand, forty-two".