1231842834 has 48 divisors (see below), whose sum is σ = 2742809472. Its totient is φ = 399367584.

The previous prime is 1231842779. The next prime is 1231842839. The reversal of 1231842834 is 4382481321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1231842839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133432 + ... + 142364.

It is an arithmetic number, because the mean of its divisors is an integer number (57141864).

Almost surely, 2^1231842834 is an apocalyptic number.

1231842834 is an abundant number, since it is smaller than the sum of its proper divisors (1510966638).

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

1231842834 is a wasteful number, since it uses less digits than its factorization.

1231842834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9151 (or 9148 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 1231842834 is about 35097.6186371668. The cubic root of 1231842834 is about 1071.9760943888.

The spelling of 1231842834 in words is "one billion, two hundred thirty-one million, eight hundred forty-two thousand, eight hundred thirty-four".