10403123231 has 4 divisors (see below), whose sum is σ = 10472943000. Its totient is φ = 10333303464.

The previous prime is 10403123177. The next prime is 10403123243. The reversal of 10403123231 is 13232130401.

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 10403123231 - 2²² = 10398928927 is a prime.

It is a super-2 number, since 2×10403123231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10403123831) 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, 34909661 + ... + 34909958.

It is an arithmetic number, because the mean of its divisors is an integer number (2618235750).

Almost surely, 2^10403123231 is an apocalyptic number.

10403123231 is a deficient number, since it is larger than the sum of its proper divisors (69819769).

10403123231 is an equidigital number, since it uses as much as digits as its factorization.

10403123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69819768.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10403123231 its reverse (13232130401), we get a palindrome (23635253632).

The spelling of 10403123231 in words is "ten billion, four hundred three million, one hundred twenty-three thousand, two hundred thirty-one".