31424286139 has 4 divisors (see below), whose sum is σ = 31650360280. Its totient is φ = 31198212000.

The previous prime is 31424286079. The next prime is 31424286149. The reversal of 31424286139 is 93168242413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93168242413 = 683 ⋅136410311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31424286139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31424286095 and 31424286104.

It is not an unprimeable number, because it can be changed into a prime (31424286149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113036862 + ... + 113037139.

It is an arithmetic number, because the mean of its divisors is an integer number (7912590070).

Almost surely, 2^31424286139 is an apocalyptic number.

31424286139 is a deficient number, since it is larger than the sum of its proper divisors (226074141).

31424286139 is a wasteful number, since it uses less digits than its factorization.

31424286139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226074140.

The product of its digits is 248832, while the sum is 43.

The spelling of 31424286139 in words is "thirty-one billion, four hundred twenty-four million, two hundred eighty-six thousand, one hundred thirty-nine".