31544401012 has 12 divisors (see below), whose sum is σ = 55491722496. Its totient is φ = 15689623160.

The previous prime is 31544400967. The next prime is 31544401037. The reversal of 31544401012 is 21010444513.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20643478 + ... + 20645005.

It is an arithmetic number, because the mean of its divisors is an integer number (4624310208).

Almost surely, 2^31544401012 is an apocalyptic number.

It is an amenable number.

31544401012 is a deficient number, since it is larger than the sum of its proper divisors (23947321484).

31544401012 is a wasteful number, since it uses less digits than its factorization.

31544401012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41288678 (or 41288676 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 31544401012 its reverse (21010444513), we get a palindrome (52554845525).

The spelling of 31544401012 in words is "thirty-one billion, five hundred forty-four million, four hundred one thousand, twelve".