31108289441 has 4 divisors (see below), whose sum is σ = 31121313300. Its totient is φ = 31095265584.

The previous prime is 31108289419. The next prime is 31108289449. The reversal of 31108289441 is 14498280113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14498280113 = 25889 ⋅560017.

It can be written as a sum of positive squares in 2 ways, for example, as 4020067216 + 27088222225 = 63404^2 + 164585^2 .

It is a cyclic number.

It is not a de Polignac number, because 31108289441 - 2¹⁴ = 31108273057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31108289449) 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 3 ways as a sum of consecutive naturals, for example, 6508346 + ... + 6513123.

It is an arithmetic number, because the mean of its divisors is an integer number (7780328325).

Almost surely, 2^31108289441 is an apocalyptic number.

It is an amenable number.

31108289441 is a deficient number, since it is larger than the sum of its proper divisors (13023859).

31108289441 is a wasteful number, since it uses less digits than its factorization.

31108289441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13023858.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 31108289441 in words is "thirty-one billion, one hundred eight million, two hundred eighty-nine thousand, four hundred forty-one".