31858433042 has 6 divisors (see below), whose sum is σ = 47788028199. Its totient is φ = 15929090310.

The previous prime is 31858433029. The next prime is 31858433071. The reversal of 31858433042 is 24033485813.

It can be written as a sum of positive squares in only one way, i.e., 15929216521 + 15929216521 = 126211^2 + 126211^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=126211.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 189317 + ... + 315527.

Almost surely, 2^31858433042 is an apocalyptic number.

31858433042 is a deficient number, since it is larger than the sum of its proper divisors (15929595157).

31858433042 is an frugal number, since it uses more digits than its factorization.

31858433042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252424 (or 126213 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 31858433042 in words is "thirty-one billion, eight hundred fifty-eight million, four hundred thirty-three thousand, forty-two".