103112123231 has 4 divisors (see below), whose sum is σ = 111043825032. Its totient is φ = 95180421432.

The previous prime is 103112123201. The next prime is 103112123243. The reversal of 103112123231 is 132321211301.

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 103112123231 - 2¹⁸ = 103111861087 is a prime.

It is a super-2 number, since 2×103112123231² (a number of 23 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 (103112123201) 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, 3965850881 + ... + 3965850906.

It is an arithmetic number, because the mean of its divisors is an integer number (27760956258).

Almost surely, 2^103112123231 is an apocalyptic number.

103112123231 is a deficient number, since it is larger than the sum of its proper divisors (7931701801).

103112123231 is an equidigital number, since it uses as much as digits as its factorization.

103112123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7931701800.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 103112123231 its reverse (132321211301), we get a palindrome (235433334532).

The spelling of 103112123231 in words is "one hundred three billion, one hundred twelve million, one hundred twenty-three thousand, two hundred thirty-one".