14278979831 has 4 divisors (see below), whose sum is σ = 14279764632. Its totient is φ = 14278195032.

The previous prime is 14278979809. The next prime is 14278979849. The reversal of 14278979831 is 13897987241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13897987241 = 577 ⋅24086633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14278979831 is a prime.

It is a super-2 number, since 2×14278979831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14278979851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364445 + ... + 401718.

It is an arithmetic number, because the mean of its divisors is an integer number (3569941158).

Almost surely, 2^14278979831 is an apocalyptic number.

14278979831 is a deficient number, since it is larger than the sum of its proper divisors (784801).

14278979831 is an equidigital number, since it uses as much as digits as its factorization.

14278979831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784800.

The product of its digits is 6096384, while the sum is 59.

The spelling of 14278979831 in words is "fourteen billion, two hundred seventy-eight million, nine hundred seventy-nine thousand, eight hundred thirty-one".