31554244345 has 24 divisors (see below), whose sum is σ = 41015794392. Its totient is φ = 23293670400.

The previous prime is 31554244343. The next prime is 31554244373. The reversal of 31554244345 is 54344245513.

It can be written as a sum of positive squares in 12 ways, for example, as 22329026041 + 9225218304 = 149429^2 + 96048^2 .

It is not a de Polignac number, because 31554244345 - 2¹ = 31554244343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31554244298 and 31554244307.

It is not an unprimeable number, because it can be changed into a prime (31554244343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3900705 + ... + 3908785.

It is an arithmetic number, because the mean of its divisors is an integer number (1708991433).

Almost surely, 2^31554244345 is an apocalyptic number.

It is an amenable number.

31554244345 is a deficient number, since it is larger than the sum of its proper divisors (9461550047).

31554244345 is a wasteful number, since it uses less digits than its factorization.

31554244345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12733 (or 12720 counting only the distinct ones).

The product of its digits is 576000, while the sum is 40.

Adding to 31554244345 its reverse (54344245513), we get a palindrome (85898489858).

The spelling of 31554244345 in words is "thirty-one billion, five hundred fifty-four million, two hundred forty-four thousand, three hundred forty-five".