1231234788 has 96 divisors (see below), whose sum is σ = 3428409600. Its totient is φ = 336462336.

The previous prime is 1231234787. The next prime is 1231234801. The reversal of 1231234788 is 8874321321.

It is not an unprimeable number, because it can be changed into a prime (1231234783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263206 + ... + 267842.

It is an arithmetic number, because the mean of its divisors is an integer number (35712600).

Almost surely, 2^1231234788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231234788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1714204800).

1231234788 is an abundant number, since it is smaller than the sum of its proper divisors (2197174812).

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

1231234788 is a wasteful number, since it uses less digits than its factorization.

1231234788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789 (or 4787 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 1231234788 is about 35088.9553563511. The cubic root of 1231234788 is about 1071.7996871302.

The spelling of 1231234788 in words is "one billion, two hundred thirty-one million, two hundred thirty-four thousand, seven hundred eighty-eight".