38309313 has 16 divisors (see below), whose sum is σ = 61810560. Its totient is φ = 20603136.

The previous prime is 38309303. The next prime is 38309321. The reversal of 38309313 is 31390383.

It is not a de Polignac number, because 38309313 - 2⁸ = 38309057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38309303) 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, 53298 + ... + 54011.

It is an arithmetic number, because the mean of its divisors is an integer number (3863160).

Almost surely, 2^38309313 is an apocalyptic number.

It is an amenable number.

38309313 is a deficient number, since it is larger than the sum of its proper divisors (23501247).

38309313 is a wasteful number, since it uses less digits than its factorization.

38309313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107336.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 38309313 is about 6189.4517527807. The cubic root of 38309313 is about 337.1072721279.

Adding to 38309313 its reverse (31390383), we get a palindrome (69699696).

The spelling of 38309313 in words is "thirty-eight million, three hundred nine thousand, three hundred thirteen".