31241331016 has 48 divisors (see below), whose sum is σ = 68252136300. Its totient is φ = 13367337984.

The previous prime is 31241330971. The next prime is 31241331019. The reversal of 31241331016 is 61013314213.

It can be written as a sum of positive squares in 2 ways, for example, as 22545022500 + 8696308516 = 150150^2 + 93254^2 .

It is not an unprimeable number, because it can be changed into a prime (31241331019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177280 + ... + 306448.

Almost surely, 2^31241331016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31241331016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34126068150).

31241331016 is an abundant number, since it is smaller than the sum of its proper divisors (37010805284).

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

31241331016 is a wasteful number, since it uses less digits than its factorization.

31241331016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129806 (or 129795 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31241331016 its reverse (61013314213), we get a palindrome (92254645229).

The spelling of 31241331016 in words is "thirty-one billion, two hundred forty-one million, three hundred thirty-one thousand, sixteen".