31122766044 has 18 divisors (see below), whose sum is σ = 78671436480. Its totient is φ = 10374255336.

The previous prime is 31122766033. The next prime is 31122766067. The reversal of 31122766044 is 44066722113.

31122766044 is a `hidden beast` number, since 31 + 12 + 2 + 7 + 6 + 604 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 864521279 = 31122766044 / (3 + 1 + 1 + 2 + 2 + 7 + 6 + 6 + 0 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 432260604 + ... + 432260675.

It is an arithmetic number, because the mean of its divisors is an integer number (4370635360).

Almost surely, 2^31122766044 is an apocalyptic number.

It is an amenable number.

31122766044 is an abundant number, since it is smaller than the sum of its proper divisors (47548670436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31122766044 is a wasteful number, since it uses less digits than its factorization.

31122766044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864521289 (or 864521284 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 31122766044 in words is "thirty-one billion, one hundred twenty-two million, seven hundred sixty-six thousand, forty-four".