3871213507 has 4 divisors (see below), whose sum is σ = 4424244016. Its totient is φ = 3318183000.

The previous prime is 3871213457. The next prime is 3871213517. The reversal of 3871213507 is 7053121783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3871213507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3871213517) 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, 276515244 + ... + 276515257.

It is an arithmetic number, because the mean of its divisors is an integer number (1106061004).

Almost surely, 2^3871213507 is an apocalyptic number.

3871213507 is a deficient number, since it is larger than the sum of its proper divisors (553030509).

3871213507 is an equidigital number, since it uses as much as digits as its factorization.

3871213507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553030508.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 3871213507 is about 62219.0767128539. The cubic root of 3871213507 is about 1570.1785544825.

The spelling of 3871213507 in words is "three billion, eight hundred seventy-one million, two hundred thirteen thousand, five hundred seven".