10312128403 has 4 divisors (see below), whose sum is σ = 10312391320. Its totient is φ = 10311865488.

The previous prime is 10312128397. The next prime is 10312128439. The reversal of 10312128403 is 30482121301.

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 10312128403 - 2²⁹ = 9775257491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10312128503) 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, 59493 + ... + 155446.

It is an arithmetic number, because the mean of its divisors is an integer number (2578097830).

Almost surely, 2^10312128403 is an apocalyptic number.

10312128403 is a deficient number, since it is larger than the sum of its proper divisors (262917).

10312128403 is an equidigital number, since it uses as much as digits as its factorization.

10312128403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262916.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 10312128403 its reverse (30482121301), we get a palindrome (40794249704).

The spelling of 10312128403 in words is "ten billion, three hundred twelve million, one hundred twenty-eight thousand, four hundred three".