31489094745 has 12 divisors (see below), whose sum is σ = 54581097636. Its totient is φ = 16794183840.

The previous prime is 31489094723. The next prime is 31489094761. The reversal of 31489094745 is 54749098413.

31489094745 is a `hidden beast` number, since 3 + 1 + 489 + 0 + 94 + 74 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5755801689 + 25733293056 = 75867^2 + 160416^2 .

It is not a de Polignac number, because 31489094745 - 2⁷ = 31489094617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31489094691 and 31489094700.

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 11 ways as a sum of consecutive naturals, for example, 349878786 + ... + 349878875.

It is an arithmetic number, because the mean of its divisors is an integer number (4548424803).

Almost surely, 2^31489094745 is an apocalyptic number.

It is an amenable number.

31489094745 is a deficient number, since it is larger than the sum of its proper divisors (23092002891).

31489094745 is a wasteful number, since it uses less digits than its factorization.

31489094745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699757672 (or 699757669 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 31489094745 in words is "thirty-one billion, four hundred eighty-nine million, ninety-four thousand, seven hundred forty-five".