981310045 has 4 divisors (see below), whose sum is σ = 1177572060. Its totient is φ = 785048032.

The previous prime is 981310037. The next prime is 981310051. The reversal of 981310045 is 540013189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540013189 = 83 ⋅6506183.

It can be written as a sum of positive squares in 2 ways, for example, as 678758809 + 302551236 = 26053^2 + 17394^2 .

It is a cyclic number.

It is not a de Polignac number, because 981310045 - 2³ = 981310037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981309989 and 981310016.

It is a congruent number.

It is an unprimeable number.

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, 98131000 + ... + 98131009.

It is an arithmetic number, because the mean of its divisors is an integer number (294393015).

Almost surely, 2^981310045 is an apocalyptic number.

It is an amenable number.

981310045 is a deficient number, since it is larger than the sum of its proper divisors (196262015).

981310045 is a wasteful number, since it uses less digits than its factorization.

981310045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196262014.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 981310045 is about 31325.8686232321. The cubic root of 981310045 is about 993.7307941913.

The spelling of 981310045 in words is "nine hundred eighty-one million, three hundred ten thousand, forty-five".