31124522045 has 4 divisors (see below), whose sum is σ = 37349426460. Its totient is φ = 24899617632.

The previous prime is 31124522021. The next prime is 31124522053. The reversal of 31124522045 is 54022542113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23291032996 + 7833489049 = 152614^2 + 88507^2 .

It is a cyclic number.

It is not a de Polignac number, because 31124522045 - 2⁸ = 31124521789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31124521999 and 31124522017.

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, 3112452200 + ... + 3112452209.

It is an arithmetic number, because the mean of its divisors is an integer number (9337356615).

Almost surely, 2^31124522045 is an apocalyptic number.

It is an amenable number.

31124522045 is a deficient number, since it is larger than the sum of its proper divisors (6224904415).

31124522045 is an equidigital number, since it uses as much as digits as its factorization.

31124522045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224904414.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 31124522045 in words is "thirty-one billion, one hundred twenty-four million, five hundred twenty-two thousand, forty-five".