19973982031 has 8 divisors (see below), whose sum is σ = 20721920000. Its totient is φ = 19232520120.

The previous prime is 19973982011. The next prime is 19973982037. The reversal of 19973982031 is 13028937991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19973982031 - 2¹⁵ = 19973949263 is a prime.

It is a super-2 number, since 2×19973982031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19973982031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19973982037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612731 + ... + 1625068.

It is an arithmetic number, because the mean of its divisors is an integer number (2590240000).

Almost surely, 2^19973982031 is an apocalyptic number.

19973982031 is a deficient number, since it is larger than the sum of its proper divisors (747937969).

19973982031 is a wasteful number, since it uses less digits than its factorization.

19973982031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238029.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 19973982031 in words is "nineteen billion, nine hundred seventy-three million, nine hundred eighty-two thousand, thirty-one".