1023513252 has 24 divisors (see below), whose sum is σ = 2388724800. Its totient is φ = 341095776.

The previous prime is 1023513247. The next prime is 1023513289. The reversal of 1023513252 is 2523153201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85449 + ... + 96687.

It is an arithmetic number, because the mean of its divisors is an integer number (99530200).

Almost surely, 2^1023513252 is an apocalyptic number.

1023513252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1023513252 is an abundant number, since it is smaller than the sum of its proper divisors (1365211548).

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

1023513252 is a wasteful number, since it uses less digits than its factorization.

1023513252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18835 (or 18833 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1023513252 is about 31992.3936584933. The cubic root of 1023513252 is about 1007.7771104246. Note that the first 3 decimals are identical.

Adding to 1023513252 its reverse (2523153201), we get a palindrome (3546666453).

The spelling of 1023513252 in words is "one billion, twenty-three million, five hundred thirteen thousand, two hundred fifty-two".