12103031012331 has 8 divisors (see below), whose sum is σ = 18442713923584. Its totient is φ = 6916017721320.

The previous prime is 12103031012329. The next prime is 12103031012339. The reversal of 12103031012331 is 13321013030121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12103031012331 - 2¹ = 12103031012329 is a prime.

It is a super-2 number, since 2×12103031012331² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 576334810111 = 12103031012331 / (1 + 2 + 1 + 0 + 3 + 0 + 3 + 1 + 0 + 1 + 2 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12103031012298 and 12103031012307.

It is not an unprimeable number, because it can be changed into a prime (12103031012339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288167405035 + ... + 288167405076.

It is an arithmetic number, because the mean of its divisors is an integer number (2305339240448).

Almost surely, 2^{12103031012331} is an apocalyptic number.

12103031012331 is a deficient number, since it is larger than the sum of its proper divisors (6339682911253).

12103031012331 is an equidigital number, since it uses as much as digits as its factorization.

12103031012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576334810121.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 12103031012331 its reverse (13321013030121), we get a palindrome (25424044042452).

The spelling of 12103031012331 in words is "twelve trillion, one hundred three billion, thirty-one million, twelve thousand, three hundred thirty-one".