279312137 has 16 divisors (see below), whose sum is σ = 312984000. Its totient is φ = 247485504.

The previous prime is 279312053. The next prime is 279312151. The reversal of 279312137 is 731213972.

It is a cyclic number.

It is not a de Polignac number, because 279312137 - 2¹² = 279308041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 279312097 and 279312106.

It is not an unprimeable number, because it can be changed into a prime (279312197) 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, 65414 + ... + 69552.

It is an arithmetic number, because the mean of its divisors is an integer number (19561500).

Almost surely, 2^279312137 is an apocalyptic number.

It is an amenable number.

279312137 is a deficient number, since it is larger than the sum of its proper divisors (33671863).

279312137 is a wasteful number, since it uses less digits than its factorization.

279312137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its digits is 15876, while the sum is 35.

The square root of 279312137 is about 16712.6340533143. The cubic root of 279312137 is about 653.6770976254.

The spelling of 279312137 in words is "two hundred seventy-nine million, three hundred twelve thousand, one hundred thirty-seven".