31323413045 has 8 divisors (see below), whose sum is σ = 37827511224. Its totient is φ = 24899120064.

The previous prime is 31323412999. The next prime is 31323413063. The reversal of 31323413045 is 54031432313.

It can be written as a sum of positive squares in 4 ways, for example, as 4838454481 + 26484958564 = 69559^2 + 162742^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31323413045 - 2³² = 27028445749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31323412999 and 31323413017.

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, 19950434 + ... + 19952003.

It is an arithmetic number, because the mean of its divisors is an integer number (4728438903).

Almost surely, 2^31323413045 is an apocalyptic number.

It is an amenable number.

31323413045 is a deficient number, since it is larger than the sum of its proper divisors (6504098179).

31323413045 is a wasteful number, since it uses less digits than its factorization.

31323413045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39902599.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 31323413045 its reverse (54031432313), we get a palindrome (85354845358).

The spelling of 31323413045 in words is "thirty-one billion, three hundred twenty-three million, four hundred thirteen thousand, forty-five".