4135131223 has 4 divisors (see below), whose sum is σ = 4139230480. Its totient is φ = 4131031968.

The previous prime is 4135131173. The next prime is 4135131227. The reversal of 4135131223 is 3221315314.

It is a happy number.

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-4135131223 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 (4135131227) 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, 2048115 + ... + 2050132.

It is an arithmetic number, because the mean of its divisors is an integer number (1034807620).

Almost surely, 2^4135131223 is an apocalyptic number.

4135131223 is a deficient number, since it is larger than the sum of its proper divisors (4099257).

4135131223 is a wasteful number, since it uses less digits than its factorization.

4135131223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099256.

The product of its digits is 2160, while the sum is 25.

The square root of 4135131223 is about 64304.9859886463. The cubic root of 4135131223 is about 1605.0790711652.

Adding to 4135131223 its reverse (3221315314), we get a palindrome (7356446537).

It can be divided in two parts, 413513 and 1223, that added together give a square (414736 = 644²).

The spelling of 4135131223 in words is "four billion, one hundred thirty-five million, one hundred thirty-one thousand, two hundred twenty-three".