2120312308 has 6 divisors (see below), whose sum is σ = 3710546546. Its totient is φ = 1060156152.

The previous prime is 2120312303. The next prime is 2120312309. The reversal of 2120312308 is 8032130212.

It can be written as a sum of positive squares in only one way, i.e., 1870735504 + 249576804 = 43252^2 + 15798^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120312303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265039035 + ... + 265039042.

Almost surely, 2^2120312308 is an apocalyptic number.

It is an amenable number.

2120312308 is a deficient number, since it is larger than the sum of its proper divisors (1590234238).

2120312308 is a wasteful number, since it uses less digits than its factorization.

2120312308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530078081 (or 530078079 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2120312308 is about 46046.8490561515. The cubic root of 2120312308 is about 1284.6947364930.

The spelling of 2120312308 in words is "two billion, one hundred twenty million, three hundred twelve thousand, three hundred eight".