103405221431 has 4 divisors (see below), whose sum is σ = 103621099200. Its totient is φ = 103189343664.

The previous prime is 103405221427. The next prime is 103405221487. The reversal of 103405221431 is 134122504301.

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 103405221431 - 2² = 103405221427 is a prime.

It is a super-2 number, since 2×103405221431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103405221431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103405221421) 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, 107938166 + ... + 107939123.

It is an arithmetic number, because the mean of its divisors is an integer number (25905274800).

Almost surely, 2^103405221431 is an apocalyptic number.

103405221431 is a deficient number, since it is larger than the sum of its proper divisors (215877769).

103405221431 is an equidigital number, since it uses as much as digits as its factorization.

103405221431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215877768.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 103405221431 its reverse (134122504301), we get a palindrome (237527725732).

The spelling of 103405221431 in words is "one hundred three billion, four hundred five million, two hundred twenty-one thousand, four hundred thirty-one".