1002431231 has 8 divisors (see below), whose sum is σ = 1065025584. Its totient is φ = 940240000.

The previous prime is 1002431219. The next prime is 1002431267. The reversal of 1002431231 is 1321342001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002431231 is a prime.

It is a super-2 number, since 2×1002431231² = 2009736745768350722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002431201) 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, 95645 + ... + 105606.

It is an arithmetic number, because the mean of its divisors is an integer number (133128198).

Almost surely, 2^1002431231 is an apocalyptic number.

1002431231 is a deficient number, since it is larger than the sum of its proper divisors (62594353).

1002431231 is a wasteful number, since it uses less digits than its factorization.

1002431231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201561.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1002431231 is about 31661.1944026122. The cubic root of 1002431231 is about 1000.8097544541.

Adding to 1002431231 its reverse (1321342001), we get a palindrome (2323773232).

The spelling of 1002431231 in words is "one billion, two million, four hundred thirty-one thousand, two hundred thirty-one".