31030120323 has 12 divisors (see below), whose sum is σ = 45914487528. Its totient is φ = 20182191840.

The previous prime is 31030120301. The next prime is 31030120339. The reversal of 31030120323 is 32302103013.

31030120323 is a `hidden beast` number, since 310 + 30 + 1 + 2 + 0 + 323 = 666.

It is not a de Polignac number, because 31030120323 - 2¹³ = 31030112131 is a prime.

It is a super-3 number, since 3×31030120323³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31030120296 and 31030120305.

It is not an unprimeable number, because it can be changed into a prime (31030120223) 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 11 ways as a sum of consecutive naturals, for example, 42045865 + ... + 42046602.

It is an arithmetic number, because the mean of its divisors is an integer number (3826207294).

Almost surely, 2^31030120323 is an apocalyptic number.

31030120323 is a deficient number, since it is larger than the sum of its proper divisors (14884367205).

31030120323 is a wasteful number, since it uses less digits than its factorization.

31030120323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84092514 (or 84092511 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31030120323 its reverse (32302103013), we get a palindrome (63332223336).

The spelling of 31030120323 in words is "thirty-one billion, thirty million, one hundred twenty thousand, three hundred twenty-three".