103123021031 has 4 divisors (see below), whose sum is σ = 103128601464. Its totient is φ = 103117440600.

The previous prime is 103123021021. The next prime is 103123021033. The reversal of 103123021031 is 130120321301.

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 103123021031 - 2³⁰ = 102049279207 is a prime.

It is a super-2 number, since 2×103123021031² (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 (103123021033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762405 + ... + 2799486.

It is an arithmetic number, because the mean of its divisors is an integer number (25782150366).

Almost surely, 2^103123021031 is an apocalyptic number.

103123021031 is a deficient number, since it is larger than the sum of its proper divisors (5580433).

103123021031 is an equidigital number, since it uses as much as digits as its factorization.

103123021031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580432.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 103123021031 its reverse (130120321301), we get a palindrome (233243342332).

The spelling of 103123021031 in words is "one hundred three billion, one hundred twenty-three million, twenty-one thousand, thirty-one".