4140031523 has 4 divisors (see below), whose sum is σ = 4140244800. Its totient is φ = 4139818248.

The previous prime is 4140031507. The next prime is 4140031541. The reversal of 4140031523 is 3251300414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3251300414 = 2 ⋅1625650207.

It is a cyclic number.

It is not a de Polignac number, because 4140031523 - 2⁴ = 4140031507 is a prime.

It is a super-2 number, since 2×4140031523² = 34279722022867399058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4140031583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74240 + ... + 117437.

It is an arithmetic number, because the mean of its divisors is an integer number (1035061200).

Almost surely, 2^4140031523 is an apocalyptic number.

4140031523 is a deficient number, since it is larger than the sum of its proper divisors (213277).

4140031523 is a wasteful number, since it uses less digits than its factorization.

4140031523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213276.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4140031523 is about 64343.0767293576. The cubic root of 4140031523 is about 1605.7128490442.

Adding to 4140031523 its reverse (3251300414), we get a palindrome (7391331937).

The spelling of 4140031523 in words is "four billion, one hundred forty million, thirty-one thousand, five hundred twenty-three".