2123311708 has 18 divisors (see below), whose sum is σ = 4322456376. Its totient is φ = 909990648.

The previous prime is 2123311681. The next prime is 2123311733. The reversal of 2123311708 is 8071133212.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5416416 + ... + 5416807.

Almost surely, 2^2123311708 is an apocalyptic number.

2123311708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2123311708 is an abundant number, since it is smaller than the sum of its proper divisors (2199144668).

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

2123311708 is a wasteful number, since it uses less digits than its factorization.

2123311708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10833241 (or 10833232 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2123311708 is about 46079.4065499980. The cubic root of 2123311708 is about 1285.3002287178.

The spelling of 2123311708 in words is "two billion, one hundred twenty-three million, three hundred eleven thousand, seven hundred eight".