1231374312 has 336 divisors, whose sum is σ = 4186627200. Its totient is φ = 338022720.

The previous prime is 1231374301. The next prime is 1231374329. The reversal of 1231374312 is 2134731321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 8858739 + ... + 8858877.

It is an arithmetic number, because the mean of its divisors is an integer number (12460200).

Almost surely, 2^1231374312 is an apocalyptic number.

1231374312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231374312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2093313600).

1231374312 is an abundant number, since it is smaller than the sum of its proper divisors (2955252888).

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

1231374312 is a wasteful number, since it uses less digits than its factorization.

1231374312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 182 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 1231374312 is about 35090.9434469921. The cubic root of 1231374312 is about 1071.8401711854.

It can be divided in two parts, 123137 and 4312, that added together give a square (127449 = 357²).

The spelling of 1231374312 in words is "one billion, two hundred thirty-one million, three hundred seventy-four thousand, three hundred twelve".