31040321103 has 48 divisors (see below), whose sum is σ = 50343920640. Its totient is φ = 18269409600.

The previous prime is 31040321101. The next prime is 31040321141. The reversal of 31040321103 is 30112304013.

It is not a de Polignac number, because 31040321103 - 2¹ = 31040321101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040321101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 444550 + ... + 509612.

It is an arithmetic number, because the mean of its divisors is an integer number (1048831680).

Almost surely, 2^31040321103 is an apocalyptic number.

31040321103 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31040321103 is a deficient number, since it is larger than the sum of its proper divisors (19303599537).

31040321103 is a wasteful number, since it uses less digits than its factorization.

31040321103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65220 (or 65217 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31040321103 its reverse (30112304013), we get a palindrome (61152625116).

The spelling of 31040321103 in words is "thirty-one billion, forty million, three hundred twenty-one thousand, one hundred three".