31698094898 has 18 divisors (see below), whose sum is σ = 48293094591. Its totient is φ = 15604185564.

The previous prime is 31698094873. The next prime is 31698094903. The reversal of 31698094898 is 89849089613.

It can be written as a sum of positive squares in only one way, i.e., 15849047449 + 15849047449 = 125893^2 + 125893^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=125893.

It is a super-2 number, since 2×31698094898² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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 8 ways as a sum of consecutive naturals, for example, 16868723 + ... + 16870601.

Almost surely, 2^31698094898 is an apocalyptic number.

31698094898 is a deficient number, since it is larger than the sum of its proper divisors (16594999693).

31698094898 is an frugal number, since it uses more digits than its factorization.

31698094898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894 (or 1948 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 65.

The spelling of 31698094898 in words is "thirty-one billion, six hundred ninety-eight million, ninety-four thousand, eight hundred ninety-eight".