10131518 has 4 divisors (see below), whose sum is σ = 15197280. Its totient is φ = 5065758.

The previous prime is 10131491. The next prime is 10131529. The reversal of 10131518 is 81513101.

10131518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81513101 = 239 ⋅341059.

It is a self number, because there is not a number n which added to its sum of digits gives 10131518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2532878 + ... + 2532881.

It is an arithmetic number, because the mean of its divisors is an integer number (3799320).

Almost surely, 2^10131518 is an apocalyptic number.

10131518 is a deficient number, since it is larger than the sum of its proper divisors (5065762).

10131518 is an equidigital number, since it uses as much as digits as its factorization.

10131518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5065761.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 10131518 is about 3183.0045554476. The cubic root of 10131518 is about 216.3838482187.

Adding to 10131518 its reverse (81513101), we get a palindrome (91644619).

The spelling of 10131518 in words is "ten million, one hundred thirty-one thousand, five hundred eighteen".