31322011103 has 4 divisors (see below), whose sum is σ = 31322681808. Its totient is φ = 31321340400.

The previous prime is 31322011069. The next prime is 31322011129. The reversal of 31322011103 is 30111022313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30111022313 = 197 ⋅152847829.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31322011103 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 (31322010103) 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, 259598 + ... + 360603.

It is an arithmetic number, because the mean of its divisors is an integer number (7830670452).

Almost surely, 2^31322011103 is an apocalyptic number.

31322011103 is a deficient number, since it is larger than the sum of its proper divisors (670705).

31322011103 is an equidigital number, since it uses as much as digits as its factorization.

31322011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670704.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31322011103 its reverse (30111022313), we get a palindrome (61433033416).

The spelling of 31322011103 in words is "thirty-one billion, three hundred twenty-two million, eleven thousand, one hundred three".