31263410545 has 4 divisors (see below), whose sum is σ = 37516092660. Its totient is φ = 25010728432.

The previous prime is 31263410419. The next prime is 31263410557. The reversal of 31263410545 is 54501436213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54501436213 = 7 ⋅7785919459.

It can be written as a sum of positive squares in 2 ways, for example, as 18753659136 + 12509751409 = 136944^2 + 111847^2 .

It is a cyclic number.

It is not a de Polignac number, because 31263410545 - 2¹⁹ = 31262886257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31263410545.

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, 3126341050 + ... + 3126341059.

It is an arithmetic number, because the mean of its divisors is an integer number (9379023165).

Almost surely, 2^31263410545 is an apocalyptic number.

It is an amenable number.

31263410545 is a deficient number, since it is larger than the sum of its proper divisors (6252682115).

31263410545 is an equidigital number, since it uses as much as digits as its factorization.

31263410545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252682114.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 31263410545 its reverse (54501436213), we get a palindrome (85764846758).

The spelling of 31263410545 in words is "thirty-one billion, two hundred sixty-three million, four hundred ten thousand, five hundred forty-five".