31123000330 has 16 divisors (see below), whose sum is σ = 56024680320. Its totient is φ = 12448471312.

The previous prime is 31123000309. The next prime is 31123000333. The reversal of 31123000330 is 3300032113.

It is a super-2 number, since 2×31123000330² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31123000333) 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, 109227 + ... + 272353.

It is an arithmetic number, because the mean of its divisors is an integer number (3501542520).

Almost surely, 2^31123000330 is an apocalyptic number.

31123000330 is a deficient number, since it is larger than the sum of its proper divisors (24901679990).

31123000330 is a wasteful number, since it uses less digits than its factorization.

31123000330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182213.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31123000330 its reverse (3300032113), we get a palindrome (34423032443).

The spelling of 31123000330 in words is "thirty-one billion, one hundred twenty-three million, three hundred thirty", and thus it is an aban number.