3138723523 has 4 divisors (see below), whose sum is σ = 3380163808. Its totient is φ = 2897283240.

The previous prime is 3138723517. The next prime is 3138723529. The reversal of 3138723523 is 3253278313.

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

It is an interprime number because it is at equal distance from previous prime (3138723517) and next prime (3138723529).

It is a cyclic number.

It is not a de Polignac number, because 3138723523 - 2¹³ = 3138715331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3138723529) 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, 120720123 + ... + 120720148.

It is an arithmetic number, because the mean of its divisors is an integer number (845040952).

Almost surely, 2^3138723523 is an apocalyptic number.

3138723523 is a deficient number, since it is larger than the sum of its proper divisors (241440285).

3138723523 is a wasteful number, since it uses less digits than its factorization.

3138723523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241440284.

The product of its digits is 90720, while the sum is 37.

The square root of 3138723523 is about 56024.3118922491. The cubic root of 3138723523 is about 1464.1458945338.

The spelling of 3138723523 in words is "three billion, one hundred thirty-eight million, seven hundred twenty-three thousand, five hundred twenty-three".