38289131 has 4 divisors (see below), whose sum is σ = 38306112. Its totient is φ = 38272152.

The previous prime is 38289127. The next prime is 38289133. The reversal of 38289131 is 13198283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13198283 = 7 ⋅1885469.

It is a cyclic number.

It is not a de Polignac number, because 38289131 - 2² = 38289127 is a prime.

It is a super-2 number, since 2×38289131² = 2932115105470322, 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 = 38289091 and 38289100.

It is not an unprimeable number, because it can be changed into a prime (38289133) 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, 4475 + ... + 9828.

It is an arithmetic number, because the mean of its divisors is an integer number (9576528).

Almost surely, 2^38289131 is an apocalyptic number.

38289131 is a deficient number, since it is larger than the sum of its proper divisors (16981).

38289131 is a wasteful number, since it uses less digits than its factorization.

38289131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980.

The product of its digits is 10368, while the sum is 35.

The square root of 38289131 is about 6187.8211835831. The cubic root of 38289131 is about 337.0480637743.

The spelling of 38289131 in words is "thirty-eight million, two hundred eighty-nine thousand, one hundred thirty-one".