31845168434 has 16 divisors (see below), whose sum is σ = 50583830616. Its totient is φ = 14984121600.

The previous prime is 31845168419. The next prime is 31845168457. The reversal of 31845168434 is 43486154813.

It can be written as a sum of positive squares in 4 ways, for example, as 25028189209 + 6816979225 = 158203^2 + 82565^2 .

It is a super-2 number, since 2×31845168434² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 246824 + ... + 353004.

Almost surely, 2^31845168434 is an apocalyptic number.

31845168434 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31845168434 is a deficient number, since it is larger than the sum of its proper divisors (18738662182).

31845168434 is a wasteful number, since it uses less digits than its factorization.

31845168434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115021.

The product of its digits is 1105920, while the sum is 47.

The spelling of 31845168434 in words is "thirty-one billion, eight hundred forty-five million, one hundred sixty-eight thousand, four hundred thirty-four".