1023265287 has 24 divisors (see below), whose sum is σ = 1614682368. Its totient is φ = 619290000.

The previous prime is 1023265237. The next prime is 1023265291. The reversal of 1023265287 is 7825623201.

1023265287 is a `hidden beast` number, since 102 + 3 + 26 + 528 + 7 = 666.

It is not a de Polignac number, because 1023265287 - 2⁸ = 1023265031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023265237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67468 + ... + 81230.

It is an arithmetic number, because the mean of its divisors is an integer number (67278432).

Almost surely, 2^1023265287 is an apocalyptic number.

1023265287 is a deficient number, since it is larger than the sum of its proper divisors (591417081).

1023265287 is a wasteful number, since it uses less digits than its factorization.

1023265287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14531 (or 14528 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1023265287 is about 31988.5180494502. The cubic root of 1023265287 is about 1007.6957196418.

Adding to 1023265287 its reverse (7825623201), we get a palindrome (8848888488).

The spelling of 1023265287 in words is "one billion, twenty-three million, two hundred sixty-five thousand, two hundred eighty-seven".