103213431321 has 256 divisors, whose sum is σ = 208252477440. Its totient is φ = 43635179520.

The previous prime is 103213431319. The next prime is 103213431323. The reversal of 103213431321 is 123134312301.

It is an interprime number because it is at equal distance from previous prime (103213431319) and next prime (103213431323).

It is not a de Polignac number, because 103213431321 - 2¹ = 103213431319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103213431291 and 103213431300.

It is not an unprimeable number, because it can be changed into a prime (103213431323) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 94086445 + ... + 94087541.

It is an arithmetic number, because the mean of its divisors is an integer number (813486240).

Almost surely, 2^103213431321 is an apocalyptic number.

103213431321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103213431321 is an abundant number, since it is smaller than the sum of its proper divisors (105039046119).

103213431321 is a wasteful number, since it uses less digits than its factorization.

103213431321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 103213431321 its reverse (123134312301), we get a palindrome (226347743622).

The spelling of 103213431321 in words is "one hundred three billion, two hundred thirteen million, four hundred thirty-one thousand, three hundred twenty-one".