103120321031 has 32 divisors (see below), whose sum is σ = 131389023360. Its totient is φ = 78719122944.

The previous prime is 103120320997. The next prime is 103120321049. The reversal of 103120321031 is 130123021301.

It is not a de Polignac number, because 103120321031 - 2¹⁰ = 103120320007 is a prime.

It is a super-2 number, since 2×103120321031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103120324031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3821021 + ... + 3847913.

It is an arithmetic number, because the mean of its divisors is an integer number (4105906980).

Almost surely, 2^103120321031 is an apocalyptic number.

103120321031 is a deficient number, since it is larger than the sum of its proper divisors (28268702329).

103120321031 is a wasteful number, since it uses less digits than its factorization.

103120321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28395.

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

Adding to 103120321031 its reverse (130123021301), we get a palindrome (233243342332).

The spelling of 103120321031 in words is "one hundred three billion, one hundred twenty million, three hundred twenty-one thousand, thirty-one".