19699941231 has 56 divisors (see below), whose sum is σ = 30464795520. Its totient is φ = 12726882000.

The previous prime is 19699941229. The next prime is 19699941269. The reversal of 19699941231 is 13214999691.

It is a happy number.

19699941231 is a `hidden beast` number, since 196 + 9 + 9 + 9 + 412 + 31 = 666.

It is not a de Polignac number, because 19699941231 - 2¹ = 19699941229 is a prime.

It is a super-2 number, since 2×19699941231² (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 (19699941221) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3050556 + ... + 3057006.

Almost surely, 2^19699941231 is an apocalyptic number.

19699941231 is a deficient number, since it is larger than the sum of its proper divisors (10764854289).

19699941231 is an frugal number, since it uses more digits than its factorization.

19699941231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6599 (or 6584 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The spelling of 19699941231 in words is "nineteen billion, six hundred ninety-nine million, nine hundred forty-one thousand, two hundred thirty-one".