2131208 has 8 divisors (see below), whose sum is σ = 3996030. Its totient is φ = 1065600.

The previous prime is 2131193. The next prime is 2131223. The reversal of 2131208 is 8021312.

It is an interprime number because it is at equal distance from previous prime (2131193) and next prime (2131223).

It can be written as a sum of positive squares in only one way, i.e., 1898884 + 232324 = 1378^2 + 482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133193 + ... + 133208.

2^2131208 is an apocalyptic number.

It is an amenable number.

2131208 is a deficient number, since it is larger than the sum of its proper divisors (1864822).

2131208 is a wasteful number, since it uses less digits than its factorization.

2131208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266407 (or 266403 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2131208 is about 1459.8657472521. The cubic root of 2131208 is about 128.6891540187.

The spelling of 2131208 in words is "two million, one hundred thirty-one thousand, two hundred eight".