1002403231 has 4 divisors (see below), whose sum is σ = 1002607200. Its totient is φ = 1002199264.

The previous prime is 1002403217. The next prime is 1002403247. The reversal of 1002403231 is 1323042001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323042001 = 601 ⋅2201401.

It is a cyclic number.

It is not a de Polignac number, because 1002403231 - 2²⁵ = 968848799 is a prime.

It is a super-2 number, since 2×1002403231² = 2009624475038478722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002403261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94426 + ... + 104503.

It is an arithmetic number, because the mean of its divisors is an integer number (250651800).

Almost surely, 2^1002403231 is an apocalyptic number.

1002403231 is a deficient number, since it is larger than the sum of its proper divisors (203969).

1002403231 is an equidigital number, since it uses as much as digits as its factorization.

1002403231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203968.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1002403231 is about 31660.7522178485. The cubic root of 1002403231 is about 1000.8004361311.

Adding to 1002403231 its reverse (1323042001), we get a palindrome (2325445232).

The spelling of 1002403231 in words is "one billion, two million, four hundred three thousand, two hundred thirty-one".