30231212000 has 96 divisors (see below), whose sum is σ = 81030759264. Its totient is φ = 10993152000.

The previous prime is 30231211981. The next prime is 30231212009. The reversal of 30231212000 is 21213203.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231212009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299537 + ... + 387536.

It is an arithmetic number, because the mean of its divisors is an integer number (844070409).

Almost surely, 2^30231212000 is an apocalyptic number.

It is an amenable number.

30231212000 is an abundant number, since it is smaller than the sum of its proper divisors (50799547264).

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

30231212000 is a wasteful number, since it uses less digits than its factorization.

30231212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687109 (or 687091 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30231212000 its reverse (21213203), we get a palindrome (30252425203).

The spelling of 30231212000 in words is "thirty billion, two hundred thirty-one million, two hundred twelve thousand".