1002231253 has 4 divisors (see below), whose sum is σ = 1002361248. Its totient is φ = 1002101260.

The previous prime is 1002231227. The next prime is 1002231287. The reversal of 1002231253 is 3521322001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002231253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002231253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002234253) 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, 52651 + ... + 69112.

It is an arithmetic number, because the mean of its divisors is an integer number (250590312).

Almost surely, 2^1002231253 is an apocalyptic number.

It is an amenable number.

1002231253 is a deficient number, since it is larger than the sum of its proper divisors (129995).

1002231253 is an equidigital number, since it uses as much as digits as its factorization.

1002231253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129994.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1002231253 is about 31658.0361519789. The cubic root of 1002231253 is about 1000.7431985191.

Adding to 1002231253 its reverse (3521322001), we get a palindrome (4523553254).

The spelling of 1002231253 in words is "one billion, two million, two hundred thirty-one thousand, two hundred fifty-three".