31122122103 has 32 divisors (see below), whose sum is σ = 47747033280. Its totient is φ = 20022837120.

The previous prime is 31122122093. The next prime is 31122122107. The reversal of 31122122103 is 30122122113.

It is not a de Polignac number, because 31122122103 - 2¹⁴ = 31122105719 is a prime.

It is a super-2 number, since 2×31122122103² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122122107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90976 + ... + 265557.

It is an arithmetic number, because the mean of its divisors is an integer number (1492094790).

Almost surely, 2^31122122103 is an apocalyptic number.

31122122103 is a deficient number, since it is larger than the sum of its proper divisors (16624911177).

31122122103 is a wasteful number, since it uses less digits than its factorization.

31122122103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356656 (or 356650 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31122122103 its reverse (30122122113), we get a palindrome (61244244216).

The spelling of 31122122103 in words is "thirty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred three".