31442550345 has 48 divisors (see below), whose sum is σ = 58652420112. Its totient is φ = 15524167680.

The previous prime is 31442550329. The next prime is 31442550353. The reversal of 31442550345 is 54305524413.

31442550345 is a `hidden beast` number, since 3 + 144 + 2 + 5 + 503 + 4 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 275825664 + 31166724681 = 16608^2 + 176541^2 .

It is not a de Polignac number, because 31442550345 - 2⁴ = 31442550329 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 290232 + ... + 383561.

It is an arithmetic number, because the mean of its divisors is an integer number (1221925419).

Almost surely, 2^31442550345 is an apocalyptic number.

It is an amenable number.

31442550345 is a deficient number, since it is larger than the sum of its proper divisors (27209869767).

31442550345 is a wasteful number, since it uses less digits than its factorization.

31442550345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673882 (or 673879 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 31442550345 in words is "thirty-one billion, four hundred forty-two million, five hundred fifty thousand, three hundred forty-five".