103556431331 has 4 divisors (see below), whose sum is σ = 104242235664. Its totient is φ = 102870627000.

The previous prime is 103556431313. The next prime is 103556431339. The reversal of 103556431331 is 133134655301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133134655301 = 197 ⋅675810433.

It is a cyclic number.

It is not a de Polignac number, because 103556431331 - 2²² = 103552237027 is a prime.

It is a super-3 number, since 3×103556431331³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103556431291 and 103556431300.

It is not an unprimeable number, because it can be changed into a prime (103556431339) 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, 342901940 + ... + 342902241.

It is an arithmetic number, because the mean of its divisors is an integer number (26060558916).

Almost surely, 2^103556431331 is an apocalyptic number.

103556431331 is a deficient number, since it is larger than the sum of its proper divisors (685804333).

103556431331 is an equidigital number, since it uses as much as digits as its factorization.

103556431331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685804332.

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 103556431331 in words is "one hundred three billion, five hundred fifty-six million, four hundred thirty-one thousand, three hundred thirty-one".