31311300444 has 24 divisors (see below), whose sum is σ = 73550038800. Its totient is φ = 10367051904.

The previous prime is 31311300421. The next prime is 31311300473. The reversal of 31311300444 is 44400311313.

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 7 ways as a sum of consecutive naturals, for example, 8754169 + ... + 8757744.

It is an arithmetic number, because the mean of its divisors is an integer number (3064584950).

Almost surely, 2^31311300444 is an apocalyptic number.

It is an amenable number.

31311300444 is an abundant number, since it is smaller than the sum of its proper divisors (42238738356).

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

31311300444 is a wasteful number, since it uses less digits than its factorization.

31311300444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17512069 (or 17512067 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31311300444 its reverse (44400311313), we get a palindrome (75711611757).

The spelling of 31311300444 in words is "thirty-one billion, three hundred eleven million, three hundred thousand, four hundred forty-four".