31106545338 has 64 divisors (see below), whose sum is σ = 69069335040. Its totient is φ = 9259723200.

The previous prime is 31106545331. The next prime is 31106545363. The reversal of 31106545338 is 83354560113.

It is a junction number, because it is equal to n+sod(n) for n = 31106545296 and 31106545305.

It is not an unprimeable number, because it can be changed into a prime (31106545331) 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 31 ways as a sum of consecutive naturals, for example, 8709093 + ... + 8712663.

It is an arithmetic number, because the mean of its divisors is an integer number (1079208360).

Almost surely, 2^31106545338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31106545338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34534667520).

31106545338 is an abundant number, since it is smaller than the sum of its proper divisors (37962789702).

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

31106545338 is a wasteful number, since it uses less digits than its factorization.

31106545338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 31106545338 in words is "thirty-one billion, one hundred six million, five hundred forty-five thousand, three hundred thirty-eight".