1232313240 has 128 divisors (see below), whose sum is σ = 3948134400. Its totient is φ = 307023360.

The previous prime is 1232313227. The next prime is 1232313259. The reversal of 1232313240 is 423132321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102169 + ... + 113591.

It is an arithmetic number, because the mean of its divisors is an integer number (30844800).

Almost surely, 2^1232313240 is an apocalyptic number.

1232313240 is a gapful number since it is divisible by the number (10) 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 1232313240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1974067200).

1232313240 is an abundant number, since it is smaller than the sum of its proper divisors (2715821160).

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

1232313240 is a wasteful number, since it uses less digits than its factorization.

1232313240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11497 (or 11493 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1232313240 is about 35104.3193923483. The cubic root of 1232313240 is about 1072.1125294919.

Adding to 1232313240 its reverse (423132321), we get a palindrome (1655445561).

The spelling of 1232313240 in words is "one billion, two hundred thirty-two million, three hundred thirteen thousand, two hundred forty".