31072053738 has 64 divisors (see below), whose sum is σ = 68205722112. Its totient is φ = 9358678080.

The previous prime is 31072053737. The next prime is 31072053763. The reversal of 31072053738 is 83735027013.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31072053696 and 31072053705.

It is not an unprimeable number, because it can be changed into a prime (31072053737) 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 31 ways as a sum of consecutive naturals, for example, 11579745 + ... + 11582427.

It is an arithmetic number, because the mean of its divisors is an integer number (1065714408).

Almost surely, 2^31072053738 is an apocalyptic number.

31072053738 is an abundant number, since it is smaller than the sum of its proper divisors (37133668374).

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

31072053738 is a wasteful number, since it uses less digits than its factorization.

31072053738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699.

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 31072053738 in words is "thirty-one billion, seventy-two million, fifty-three thousand, seven hundred thirty-eight".