103131321321 has 64 divisors (see below), whose sum is σ = 170601209856. Its totient is φ = 54066432000.

The previous prime is 103131321283. The next prime is 103131321347. The reversal of 103131321321 is 123123131301.

It is a happy number.

It is not a de Polignac number, because 103131321321 - 2²¹ = 103129224169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (103131321361) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23168146 + ... + 23172596.

It is an arithmetic number, because the mean of its divisors is an integer number (2665643904).

Almost surely, 2^103131321321 is an apocalyptic number.

It is an amenable number.

103131321321 is a deficient number, since it is larger than the sum of its proper divisors (67469888535).

103131321321 is a wasteful number, since it uses less digits than its factorization.

103131321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6102.

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

Adding to 103131321321 its reverse (123123131301), we get a palindrome (226254452622).

The spelling of 103131321321 in words is "one hundred three billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred twenty-one".