931243342139 has 8 divisors (see below), whose sum is σ = 1069370345280. Its totient is φ = 802027758600.

The previous prime is 931243342109. The next prime is 931243342189.

931243342139 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-931243342139 is a prime.

It is a super-2 number, since 2×931243342139² (a number of 25 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 931243342139.

It is not an unprimeable number, because it can be changed into a prime (931243342109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2227854677 + ... + 2227855094.

It is an arithmetic number, because the mean of its divisors is an integer number (133671293160).

Almost surely, 2^931243342139 is an apocalyptic number.

931243342139 is a deficient number, since it is larger than the sum of its proper divisors (138127003141).

931243342139 is a wasteful number, since it uses less digits than its factorization.

931243342139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455709801.

The product of its digits is 419904, while the sum is 44.

The spelling of 931243342139 in words is "nine hundred thirty-one billion, two hundred forty-three million, three hundred forty-two thousand, one hundred thirty-nine".