31103302121 has 8 divisors (see below), whose sum is σ = 31997833920. Its totient is φ = 30220165872.

The previous prime is 31103302039. The next prime is 31103302123. The reversal of 31103302121 is 12120330113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31103302121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31103302121.

It is not an unprimeable number, because it can be changed into a prime (31103302123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2843351 + ... + 2854268.

It is an arithmetic number, because the mean of its divisors is an integer number (3999729240).

Almost surely, 2^31103302121 is an apocalyptic number.

It is an amenable number.

31103302121 is a deficient number, since it is larger than the sum of its proper divisors (894531799).

31103302121 is a wasteful number, since it uses less digits than its factorization.

31103302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697775.

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

Adding to 31103302121 its reverse (12120330113), we get a palindrome (43223632234).

The spelling of 31103302121 in words is "thirty-one billion, one hundred three million, three hundred two thousand, one hundred twenty-one".