1231883688 has 32 divisors (see below), whose sum is σ = 3519668160. Its totient is φ = 351966720.

The previous prime is 1231883669. The next prime is 1231883689. The reversal of 1231883688 is 8863881321.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1231883689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3666153 + ... + 3666488.

It is an arithmetic number, because the mean of its divisors is an integer number (109989630).

Almost surely, 2^1231883688 is an apocalyptic number.

It is an amenable number.

1231883688 is an abundant number, since it is smaller than the sum of its proper divisors (2287784472).

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

1231883688 is a wasteful number, since it uses less digits than its factorization.

1231883688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332657 (or 7332653 counting only the distinct ones).

The product of its digits is 442368, while the sum is 48.

The square root of 1231883688 is about 35098.2006376395. The cubic root of 1231883688 is about 1071.9879449339.

The spelling of 1231883688 in words is "one billion, two hundred thirty-one million, eight hundred eighty-three thousand, six hundred eighty-eight".