387520113 has 4 divisors (see below), whose sum is σ = 516693488. Its totient is φ = 258346740.

The previous prime is 387520087. The next prime is 387520187. The reversal of 387520113 is 311025783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 387520113 - 2¹³ = 387511921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387520193) 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, 64586683 + ... + 64586688.

It is an arithmetic number, because the mean of its divisors is an integer number (129173372).

Almost surely, 2^387520113 is an apocalyptic number.

It is an amenable number.

387520113 is a deficient number, since it is larger than the sum of its proper divisors (129173375).

387520113 is a wasteful number, since it uses less digits than its factorization.

387520113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129173374.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 387520113 is about 19685.5305491114. The cubic root of 387520113 is about 729.0624813553.

Adding to 387520113 its reverse (311025783), we get a palindrome (698545896).

The spelling of 387520113 in words is "three hundred eighty-seven million, five hundred twenty thousand, one hundred thirteen".