38400311 has 8 divisors (see below), whose sum is σ = 40538880. Its totient is φ = 36273528.

The previous prime is 38400283. The next prime is 38400319. The reversal of 38400311 is 11300483.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38400311 - 2¹⁰ = 38399287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38400319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4220 + ... + 9726.

It is an arithmetic number, because the mean of its divisors is an integer number (5067360).

Almost surely, 2^38400311 is an apocalyptic number.

38400311 is a deficient number, since it is larger than the sum of its proper divisors (2138569).

38400311 is a wasteful number, since it uses less digits than its factorization.

38400311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 38400311 is about 6196.7984475857. The cubic root of 38400311 is about 337.3739769084.

Adding to 38400311 its reverse (11300483), we get a palindrome (49700794).

The spelling of 38400311 in words is "thirty-eight million, four hundred thousand, three hundred eleven".