1231858852 has 24 divisors (see below), whose sum is σ = 2483124224. Its totient is φ = 523780992.

The previous prime is 1231858753. The next prime is 1231858853. The reversal of 1231858852 is 2588581321.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1231858799 and 1231858808.

It is not an unprimeable number, because it can be changed into a prime (1231858853) 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, 169653 + ... + 176764.

Almost surely, 2^1231858852 is an apocalyptic number.

It is an amenable number.

1231858852 is an abundant number, since it is smaller than the sum of its proper divisors (1251265372).

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

1231858852 is a wasteful number, since it uses less digits than its factorization.

1231858852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346555 (or 346553 counting only the distinct ones).

The product of its digits is 153600, while the sum is 43.

The square root of 1231858852 is about 35097.8468285449. The cubic root of 1231858852 is about 1071.9807407712.

The spelling of 1231858852 in words is "one billion, two hundred thirty-one million, eight hundred fifty-eight thousand, eight hundred fifty-two".