31123112324 has 12 divisors (see below), whose sum is σ = 54491237724. Its totient is φ = 15554187264.

The previous prime is 31123112311. The next prime is 31123112329. The reversal of 31123112324 is 42321132113.

It can be written as a sum of positive squares in 2 ways, for example, as 12181095424 + 18942016900 = 110368^2 + 137630^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31123112324.

It is not an unprimeable number, because it can be changed into a prime (31123112329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1832717 + ... + 1849620.

It is an arithmetic number, because the mean of its divisors is an integer number (4540936477).

Almost surely, 2^31123112324 is an apocalyptic number.

It is an amenable number.

31123112324 is a deficient number, since it is larger than the sum of its proper divisors (23368125400).

31123112324 is a wasteful number, since it uses less digits than its factorization.

31123112324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684454 (or 3684452 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 31123112324 its reverse (42321132113), we get a palindrome (73444244437).

The spelling of 31123112324 in words is "thirty-one billion, one hundred twenty-three million, one hundred twelve thousand, three hundred twenty-four".