3121203212 has 6 divisors (see below), whose sum is σ = 5462105628. Its totient is φ = 1560601604.

The previous prime is 3121203209. The next prime is 3121203229. The reversal of 3121203212 is 2123021213.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390150398 + ... + 390150405.

It is an arithmetic number, because the mean of its divisors is an integer number (910350938).

Almost surely, 2^3121203212 is an apocalyptic number.

It is an amenable number.

3121203212 is a deficient number, since it is larger than the sum of its proper divisors (2340902416).

3121203212 is a wasteful number, since it uses less digits than its factorization.

3121203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780300807 (or 780300805 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3121203212 is about 55867.7296120041. The cubic root of 3121203212 is about 1461.4165291249.

Adding to 3121203212 its reverse (2123021213), we get a palindrome (5244224425).

The spelling of 3121203212 in words is "three billion, one hundred twenty-one million, two hundred three thousand, two hundred twelve".