10231013138 has 4 divisors (see below), whose sum is σ = 15346519710. Its totient is φ = 5115506568.

The previous prime is 10231013137. The next prime is 10231013141. The reversal of 10231013138 is 83131013201.

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

It can be written as a sum of positive squares in only one way, i.e., 8814017689 + 1416995449 = 93883^2 + 37643^2 .

It is not an unprimeable number, because it can be changed into a prime (10231013137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557753283 + ... + 2557753286.

Almost surely, 2^10231013138 is an apocalyptic number.

10231013138 is a deficient number, since it is larger than the sum of its proper divisors (5115506572).

10231013138 is an equidigital number, since it uses as much as digits as its factorization.

10231013138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115506571.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 10231013138 its reverse (83131013201), we get a palindrome (93362026339).

The spelling of 10231013138 in words is "ten billion, two hundred thirty-one million, thirteen thousand, one hundred thirty-eight".