387145111 has 4 divisors (see below), whose sum is σ = 388806912. Its totient is φ = 385483312.

The previous prime is 387145091. The next prime is 387145123. The reversal of 387145111 is 111541783.

It is a happy number.

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 387145111 - 2⁹ = 387144599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387145151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830551 + ... + 831016.

It is an arithmetic number, because the mean of its divisors is an integer number (97201728).

Almost surely, 2^387145111 is an apocalyptic number.

387145111 is a deficient number, since it is larger than the sum of its proper divisors (1661801).

387145111 is a wasteful number, since it uses less digits than its factorization.

387145111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661800.

The product of its digits is 3360, while the sum is 31.

The square root of 387145111 is about 19676.0034305750. The cubic root of 387145111 is about 728.8272349631.

Adding to 387145111 its reverse (111541783), we get a palindrome (498686894).

The spelling of 387145111 in words is "three hundred eighty-seven million, one hundred forty-five thousand, one hundred eleven".