38148431 has 2 divisors, whose sum is σ = 38148432. Its totient is φ = 38148430.

The previous prime is 38148401. The next prime is 38148433. The reversal of 38148431 is 13484183.

It is a strong prime.

It is an emirp because it is prime and its reverse (13484183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38148431 - 2¹⁴ = 38132047 is a prime.

It is a super-2 number, since 2×38148431² = 2910605575523522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 38148433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38148433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19074215 + 19074216.

It is an arithmetic number, because the mean of its divisors is an integer number (19074216).

Almost surely, 2^38148431 is an apocalyptic number.

38148431 is a deficient number, since it is larger than the sum of its proper divisors (1).

38148431 is an equidigital number, since it uses as much as digits as its factorization.

38148431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The square root of 38148431 is about 6176.4416130973. The cubic root of 38148431 is about 336.6347100123.

The spelling of 38148431 in words is "thirty-eight million, one hundred forty-eight thousand, four hundred thirty-one".