31356103514445 has 12 divisors (see below), whose sum is σ = 54350579425116. Its totient is φ = 16723255207680.

The previous prime is 31356103514443. The next prime is 31356103514537. The reversal of 31356103514445 is 54441530165313.

31356103514445 is a `hidden beast` number, since 3 + 1 + 3 + 56 + 103 + 51 + 4 + 445 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14488703798409 + 16867399716036 = 3806403^2 + 4106994^2 .

It is not a de Polignac number, because 31356103514445 - 2¹ = 31356103514443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 696802300321 = 31356103514445 / (3 + 1 + 3 + 5 + 6 + 1 + 0 + 3 + 5 + 1 + 4 + 4 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 31356103514445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31356103514441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348401150116 + ... + 348401150205.

It is an arithmetic number, because the mean of its divisors is an integer number (4529214952093).

Almost surely, 2^{31356103514445} is an apocalyptic number.

It is an amenable number.

31356103514445 is a deficient number, since it is larger than the sum of its proper divisors (22994475910671).

31356103514445 is a wasteful number, since it uses less digits than its factorization.

31356103514445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696802300332 (or 696802300329 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

Adding to 31356103514445 its reverse (54441530165313), we get a palindrome (85797633679758).

The spelling of 31356103514445 in words is "thirty-one trillion, three hundred fifty-six billion, one hundred three million, five hundred fourteen thousand, four hundred forty-five".