19968197031 has 20 divisors (see below), whose sum is σ = 30046781952. Its totient is φ = 13214955168.

The previous prime is 19968196987. The next prime is 19968197047. The reversal of 19968197031 is 13079186991.

It is a happy number.

It is not a de Polignac number, because 19968197031 - 2¹⁸ = 19967934887 is a prime.

It is a super-2 number, since 2×19968197031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19968197531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 888615 + ... + 910808.

Almost surely, 2^19968197031 is an apocalyptic number.

19968197031 is a deficient number, since it is larger than the sum of its proper divisors (10078584921).

19968197031 is a wasteful number, since it uses less digits than its factorization.

19968197031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799572 (or 1799563 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The spelling of 19968197031 in words is "nineteen billion, nine hundred sixty-eight million, one hundred ninety-seven thousand, thirty-one".