2231691608 has 16 divisors (see below), whose sum is σ = 4185351000. Its totient is φ = 1115598016.

The previous prime is 2231691589. The next prime is 2231691611. The reversal of 2231691608 is 8061961322.

It is a happy number.

It is a super-3 number, since 3×2231691608³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10583 + ... + 67641.

Almost surely, 2^2231691608 is an apocalyptic number.

It is an amenable number.

2231691608 is a deficient number, since it is larger than the sum of its proper divisors (1953659392).

2231691608 is a wasteful number, since it uses less digits than its factorization.

2231691608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61954 (or 61950 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2231691608 is about 47240.7833127267. The cubic root of 2231691608 is about 1306.8068233781.

The spelling of 2231691608 in words is "two billion, two hundred thirty-one million, six hundred ninety-one thousand, six hundred eight".