31122001223 has 8 divisors (see below), whose sum is σ = 31760427600. Its totient is φ = 30489991488.

The previous prime is 31122001193. The next prime is 31122001231. The reversal of 31122001223 is 32210022113.

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

It is a cyclic number.

It is not a de Polignac number, because 31122001223 - 2²⁸ = 30853565767 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 (31122001283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1594361 + ... + 1613762.

It is an arithmetic number, because the mean of its divisors is an integer number (3970053450).

Almost surely, 2^31122001223 is an apocalyptic number.

31122001223 is a deficient number, since it is larger than the sum of its proper divisors (638426377).

31122001223 is a wasteful number, since it uses less digits than its factorization.

31122001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208321.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31122001223 its reverse (32210022113), we get a palindrome (63332023336).

The spelling of 31122001223 in words is "thirty-one billion, one hundred twenty-two million, one thousand, two hundred twenty-three".