31529166849 has 6 divisors (see below), whose sum is σ = 45542129906. Its totient is φ = 21019444560.

The previous prime is 31529166817. The next prime is 31529166859. The reversal of 31529166849 is 94866192513.

31529166849 is a `hidden beast` number, since 3 + 1 + 529 + 16 + 68 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21205184400 + 10323982449 = 145620^2 + 101607^2 .

It is not a de Polignac number, because 31529166849 - 2⁵ = 31529166817 is a prime.

It is a super-3 number, since 3×31529166849³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31529166795 and 31529166804.

It is not an unprimeable number, because it can be changed into a prime (31529166859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1751620372 + ... + 1751620389.

Almost surely, 2^31529166849 is an apocalyptic number.

It is an amenable number.

31529166849 is a deficient number, since it is larger than the sum of its proper divisors (14012963057).

31529166849 is a wasteful number, since it uses less digits than its factorization.

31529166849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503240767 (or 3503240764 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 31529166849 in words is "thirty-one billion, five hundred twenty-nine million, one hundred sixty-six thousand, eight hundred forty-nine".