1232523240 has 256 divisors, whose sum is σ = 4117478400. Its totient is φ = 293289984.

The previous prime is 1232523221. The next prime is 1232523269. The reversal of 1232523240 is 423252321.

It is a super-2 number, since 2×1232523240² = 3038227074280195200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1232523240.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8996452 + ... + 8996588.

It is an arithmetic number, because the mean of its divisors is an integer number (16083900).

Almost surely, 2^1232523240 is an apocalyptic number.

1232523240 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 1232523240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2058739200).

1232523240 is an abundant number, since it is smaller than the sum of its proper divisors (2884955160).

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

1232523240 is a wasteful number, since it uses less digits than its factorization.

1232523240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1232523240 is about 35107.3103498402. The cubic root of 1232523240 is about 1072.1734260335.

Adding to 1232523240 its reverse (423252321), we get a palindrome (1655775561).

The spelling of 1232523240 in words is "one billion, two hundred thirty-two million, five hundred twenty-three thousand, two hundred forty".