31823064438 has 32 divisors (see below), whose sum is σ = 71046847872. Its totient is φ = 9419088000.

The previous prime is 31823064409. The next prime is 31823064443. The reversal of 31823064438 is 83446032813.

It is a self number, because there is not a number n which added to its sum of digits gives 31823064438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5603763 + ... + 5609438.

It is an arithmetic number, because the mean of its divisors is an integer number (2220213996).

Almost surely, 2^31823064438 is an apocalyptic number.

31823064438 is an abundant number, since it is smaller than the sum of its proper divisors (39223783434).

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

31823064438 is a wasteful number, since it uses less digits than its factorization.

31823064438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11213260.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 31823064438 in words is "thirty-one billion, eight hundred twenty-three million, sixty-four thousand, four hundred thirty-eight".