31230123200 has 84 divisors (see below), whose sum is σ = 79495589040. Its totient is φ = 12061271040.

The previous prime is 31230123157. The next prime is 31230123203. The reversal of 31230123200 is 232103213.

It is not an unprimeable number, because it can be changed into a prime (31230123203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290132 + ... + 382931.

It is an arithmetic number, because the mean of its divisors is an integer number (946376060).

Almost surely, 2^31230123200 is an apocalyptic number.

It is an amenable number.

31230123200 is an abundant number, since it is smaller than the sum of its proper divisors (48265465840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31230123200 is a wasteful number, since it uses less digits than its factorization.

31230123200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673114 (or 673099 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31230123200 its reverse (232103213), we get a palindrome (31462226413).

The spelling of 31230123200 in words is "thirty-one billion, two hundred thirty million, one hundred twenty-three thousand, two hundred".