1002131231 has 8 divisors (see below), whose sum is σ = 1055980800. Its totient is φ = 948392280.

The previous prime is 1002131213. The next prime is 1002131239. The reversal of 1002131231 is 1321312001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002131231 - 2⁶ = 1002131167 is a prime.

It is a super-2 number, since 2×1002131231² = 2008534008291150722, 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 (1002131239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8711 + ... + 45608.

It is an arithmetic number, because the mean of its divisors is an integer number (131997600).

Almost surely, 2^1002131231 is an apocalyptic number.

1002131231 is a deficient number, since it is larger than the sum of its proper divisors (53849569).

1002131231 is an equidigital number, since it uses as much as digits as its factorization.

1002131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55309.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1002131231 is about 31656.4563872838. The cubic root of 1002131231 is about 1000.7099062472.

Adding to 1002131231 its reverse (1321312001), we get a palindrome (2323443232).

The spelling of 1002131231 in words is "one billion, two million, one hundred thirty-one thousand, two hundred thirty-one".