320253137 has 2 divisors, whose sum is σ = 320253138. Its totient is φ = 320253136.

The previous prime is 320253133. The next prime is 320253139. The reversal of 320253137 is 731352023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233967616 + 86285521 = 15296^2 + 9289^2 .

It is a cyclic number.

It is not a de Polignac number, because 320253137 - 2² = 320253133 is a prime.

Together with 320253139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320253133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160126568 + 160126569.

It is an arithmetic number, because the mean of its divisors is an integer number (160126569).

Almost surely, 2^320253137 is an apocalyptic number.

It is an amenable number.

320253137 is a deficient number, since it is larger than the sum of its proper divisors (1).

320253137 is an equidigital number, since it uses as much as digits as its factorization.

320253137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 320253137 is about 17895.6178155436. The cubic root of 320253137 is about 684.1706887096.

The spelling of 320253137 in words is "three hundred twenty million, two hundred fifty-three thousand, one hundred thirty-seven".