31130122103 has 4 divisors (see below), whose sum is σ = 31157169408. Its totient is φ = 31103074800.

The previous prime is 31130122091. The next prime is 31130122157. The reversal of 31130122103 is 30122103113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30122103113 = 77417 ⋅389089.

It is a cyclic number.

It is not a de Polignac number, because 31130122103 - 2¹² = 31130118007 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 (31130127103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13521926 + ... + 13524227.

It is an arithmetic number, because the mean of its divisors is an integer number (7789292352).

Almost surely, 2^31130122103 is an apocalyptic number.

31130122103 is a deficient number, since it is larger than the sum of its proper divisors (27047305).

31130122103 is a wasteful number, since it uses less digits than its factorization.

31130122103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27047304.

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

Adding to 31130122103 its reverse (30122103113), we get a palindrome (61252225216).

The spelling of 31130122103 in words is "thirty-one billion, one hundred thirty million, one hundred twenty-two thousand, one hundred three".