38731113 has 6 divisors (see below), whose sum is σ = 55944954. Its totient is φ = 25820736.

The previous prime is 38731087. The next prime is 38731123. The reversal of 38731113 is 31113783.

It can be written as a sum of positive squares in only one way, i.e., 31505769 + 7225344 = 5613^2 + 2688^2 .

It is not a de Polignac number, because 38731113 - 2¹⁶ = 38665577 is a prime.

It is a super-2 number, since 2×38731113² = 3000198228437538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38731123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2151720 + ... + 2151737.

It is an arithmetic number, because the mean of its divisors is an integer number (9324159).

Almost surely, 2^38731113 is an apocalyptic number.

It is an amenable number.

38731113 is a deficient number, since it is larger than the sum of its proper divisors (17213841).

38731113 is a wasteful number, since it uses less digits than its factorization.

38731113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303463 (or 4303460 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 38731113 is about 6223.4325737490. The cubic root of 38731113 is about 338.3399850397.

Adding to 38731113 its reverse (31113783), we get a palindrome (69844896).

The spelling of 38731113 in words is "thirty-eight million, seven hundred thirty-one thousand, one hundred thirteen".