31322042123 has 4 divisors (see below), whose sum is σ = 32168583840. Its totient is φ = 30475500408.

The previous prime is 31322042107. The next prime is 31322042149. The reversal of 31322042123 is 32124022313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31322042123 - 2⁴ = 31322042107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31322042153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423270803 + ... + 423270876.

It is an arithmetic number, because the mean of its divisors is an integer number (8042145960).

Almost surely, 2^31322042123 is an apocalyptic number.

31322042123 is a deficient number, since it is larger than the sum of its proper divisors (846541717).

31322042123 is an equidigital number, since it uses as much as digits as its factorization.

31322042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846541716.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31322042123 its reverse (32124022313), we get a palindrome (63446064436).

The spelling of 31322042123 in words is "thirty-one billion, three hundred twenty-two million, forty-two thousand, one hundred twenty-three".