1231307882 has 16 divisors (see below), whose sum is σ = 2221909440. Its totient is φ = 499929408.

The previous prime is 1231307873. The next prime is 1231307887. The reversal of 1231307882 is 2887031321.

It is a super-2 number, since 2×1231307882² = 3032238200550651848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231307887) 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, 2314223 + ... + 2314754.

It is an arithmetic number, because the mean of its divisors is an integer number (138869340).

Almost surely, 2^1231307882 is an apocalyptic number.

1231307882 is a deficient number, since it is larger than the sum of its proper divisors (990601558).

1231307882 is a wasteful number, since it uses less digits than its factorization.

1231307882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629005.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1231307882 is about 35089.9968937018. The cubic root of 1231307882 is about 1071.8208963469.

The spelling of 1231307882 in words is "one billion, two hundred thirty-one million, three hundred seven thousand, eight hundred eighty-two".