331203121989 has 16 divisors (see below), whose sum is σ = 442153820160. Its totient is φ = 220527376560.

The previous prime is 331203121981. The next prime is 331203122059. The reversal of 331203121989 is 989121302133.

It is not a de Polignac number, because 331203121989 - 2³ = 331203121981 is a prime.

It is a super-2 number, since 2×331203121989² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331203121989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331203121981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12801064 + ... + 12826910.

It is an arithmetic number, because the mean of its divisors is an integer number (27634613760).

Almost surely, 2^331203121989 is an apocalyptic number.

It is an amenable number.

331203121989 is a deficient number, since it is larger than the sum of its proper divisors (110950698171).

331203121989 is a wasteful number, since it uses less digits than its factorization.

331203121989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31000.

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 331203121989 in words is "three hundred thirty-one billion, two hundred three million, one hundred twenty-one thousand, nine hundred eighty-nine".