1023523240 has 16 divisors (see below), whose sum is σ = 2302927380. Its totient is φ = 409409280.

The previous prime is 1023523223. The next prime is 1023523247. The reversal of 1023523240 is 423253201.

It can be written as a sum of positive squares in 2 ways, for example, as 966339396 + 57183844 = 31086^2 + 7562^2 .

It is not an unprimeable number, because it can be changed into a prime (1023523247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12794001 + ... + 12794080.

Almost surely, 2^1023523240 is an apocalyptic number.

1023523240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023523240 is an abundant number, since it is smaller than the sum of its proper divisors (1279404140).

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

1023523240 is a wasteful number, since it uses less digits than its factorization.

1023523240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25588092 (or 25588088 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1023523240 is about 31992.5497577170. The cubic root of 1023523240 is about 1007.7803885600.

Adding to 1023523240 its reverse (423253201), we get a palindrome (1446776441).

The spelling of 1023523240 in words is "one billion, twenty-three million, five hundred twenty-three thousand, two hundred forty".