31310321103 has 24 divisors (see below), whose sum is σ = 47845616000. Its totient is φ = 19675546704.

The previous prime is 31310321101. The next prime is 31310321123. The reversal of 31310321103 is 30112301313.

It is a happy number.

31310321103 is a `hidden beast` number, since 31 + 310 + 321 + 1 + 0 + 3 = 666.

It is not a de Polignac number, because 31310321103 - 2¹ = 31310321101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310321101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 426025 + ... + 494082.

Almost surely, 2^31310321103 is an apocalyptic number.

31310321103 is a deficient number, since it is larger than the sum of its proper divisors (16535294897).

31310321103 is a wasteful number, since it uses less digits than its factorization.

31310321103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920331 (or 920328 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31310321103 its reverse (30112301313), we get a palindrome (61422622416).

The spelling of 31310321103 in words is "thirty-one billion, three hundred ten million, three hundred twenty-one thousand, one hundred three".