31644050801 has 24 divisors (see below), whose sum is σ = 37097471880. Its totient is φ = 26877255680.

The previous prime is 31644050777. The next prime is 31644050807. The reversal of 31644050801 is 10805044613.

It can be written as a sum of positive squares in 4 ways, for example, as 21031960576 + 10612090225 = 145024^2 + 103015^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31644050801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31644050807) 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 23 ways as a sum of consecutive naturals, for example, 225665 + ... + 337953.

It is an arithmetic number, because the mean of its divisors is an integer number (1545727995).

Almost surely, 2^31644050801 is an apocalyptic number.

It is an amenable number.

31644050801 is a deficient number, since it is larger than the sum of its proper divisors (5453421079).

31644050801 is a wasteful number, since it uses less digits than its factorization.

31644050801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112465 (or 112454 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 31644050801 in words is "thirty-one billion, six hundred forty-four million, fifty thousand, eight hundred one".