305714137 has 4 divisors (see below), whose sum is σ = 319006080. Its totient is φ = 292422196.

The previous prime is 305714131. The next prime is 305714159. The reversal of 305714137 is 731417503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305714137 is a prime.

It is a super-2 number, since 2×305714137² = 186922267123309538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305714099 and 305714108.

It is not an unprimeable number, because it can be changed into a prime (305714131) 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, 6645937 + ... + 6645982.

It is an arithmetic number, because the mean of its divisors is an integer number (79751520).

Almost surely, 2^305714137 is an apocalyptic number.

It is an amenable number.

305714137 is a deficient number, since it is larger than the sum of its proper divisors (13291943).

305714137 is a wasteful number, since it uses less digits than its factorization.

305714137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13291942.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 305714137 is about 17484.6829253493. The cubic root of 305714137 is about 673.6565043176.

The spelling of 305714137 in words is "three hundred five million, seven hundred fourteen thousand, one hundred thirty-seven".