31012120323 has 10 divisors (see below), whose sum is σ = 46326747764. Its totient is φ = 20674746828.

The previous prime is 31012120297. The next prime is 31012120331. The reversal of 31012120323 is 32302121013.

31012120323 is a `hidden beast` number, since 310 + 12 + 1 + 20 + 323 = 666.

It is not a de Polignac number, because 31012120323 - 2⁶ = 31012120259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31012120296 and 31012120305.

It is not an unprimeable number, because it can be changed into a prime (31012120523) 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 9 ways as a sum of consecutive naturals, for example, 191432761 + ... + 191432922.

Almost surely, 2^31012120323 is an apocalyptic number.

31012120323 is a deficient number, since it is larger than the sum of its proper divisors (15314627441).

31012120323 is an equidigital number, since it uses as much as digits as its factorization.

31012120323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382865695 (or 382865686 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31012120323 its reverse (32302121013), we get a palindrome (63314241336).

The spelling of 31012120323 in words is "thirty-one billion, twelve million, one hundred twenty thousand, three hundred twenty-three".