24640140131 has 4 divisors (see below), whose sum is σ = 24643683792. Its totient is φ = 24636596472.

The previous prime is 24640140089. The next prime is 24640140167. The reversal of 24640140131 is 13104104642.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 24640140131 - 2²² = 24635945827 is a prime.

It is a super-2 number, since 2×24640140131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24640140131.

It is not an unprimeable number, because it can be changed into a prime (24640100131) 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, 1761380 + ... + 1775313.

It is an arithmetic number, because the mean of its divisors is an integer number (6160920948).

Almost surely, 2^24640140131 is an apocalyptic number.

24640140131 is a deficient number, since it is larger than the sum of its proper divisors (3543661).

24640140131 is an equidigital number, since it uses as much as digits as its factorization.

24640140131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543660.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 24640140131 its reverse (13104104642), we get a palindrome (37744244773).

The spelling of 24640140131 in words is "twenty-four billion, six hundred forty million, one hundred forty thousand, one hundred thirty-one".