38881331 has 4 divisors (see below), whose sum is σ = 39785592. Its totient is φ = 37977072.

The previous prime is 38881327. The next prime is 38881357. The reversal of 38881331 is 13318883.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38881331 - 2² = 38881327 is a prime.

It is a super-2 number, since 2×38881331² = 3023515800663122, 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 = 38881291 and 38881300.

It is not an unprimeable number, because it can be changed into a prime (38881301) 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, 452066 + ... + 452151.

It is an arithmetic number, because the mean of its divisors is an integer number (9946398).

Almost surely, 2^38881331 is an apocalyptic number.

38881331 is a deficient number, since it is larger than the sum of its proper divisors (904261).

38881331 is an equidigital number, since it uses as much as digits as its factorization.

38881331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904260.

The product of its digits is 13824, while the sum is 35.

The square root of 38881331 is about 6235.4896359468. The cubic root of 38881331 is about 338.7768361523.

The spelling of 38881331 in words is "thirty-eight million, eight hundred eighty-one thousand, three hundred thirty-one".