38190131 has 4 divisors (see below), whose sum is σ = 43645872. Its totient is φ = 32734392.

The previous prime is 38190127. The next prime is 38190137. The reversal of 38190131 is 13109183.

38190131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13109183 = 19 ⋅689957.

It is a cyclic number.

It is not a de Polignac number, because 38190131 - 2² = 38190127 is a prime.

It is a super-2 number, since 2×38190131² = 2916972211594322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38190131.

It is not an unprimeable number, because it can be changed into a prime (38190137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2727860 + ... + 2727873.

It is an arithmetic number, because the mean of its divisors is an integer number (10911468).

Almost surely, 2^38190131 is an apocalyptic number.

38190131 is a deficient number, since it is larger than the sum of its proper divisors (5455741).

38190131 is an equidigital number, since it uses as much as digits as its factorization.

38190131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455740.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 38190131 is about 6179.8164212216. The cubic root of 38190131 is about 336.7573236672.

The spelling of 38190131 in words is "thirty-eight million, one hundred ninety thousand, one hundred thirty-one".