1002631 has 8 divisors (see below), whose sum is σ = 1172864. Its totient is φ = 839160.

The previous prime is 1002623. The next prime is 1002647. The reversal of 1002631 is 1362001.

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

It is not a de Polignac number, because 1002631 - 2³ = 1002623 is a prime.

It is a super-2 number, since 2×1002631² = 2010537844322, which contains 22 as substring.

1002631 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1365 + ... + 1966.

It is an arithmetic number, because the mean of its divisors is an integer number (146608).

2^1002631 is an apocalyptic number.

1002631 is a deficient number, since it is larger than the sum of its proper divisors (170233).

1002631 is an equidigital number, since it uses as much as digits as its factorization.

1002631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1002631 is about 1001.3146358663. The cubic root of 1002631 is about 100.0876231993.

Adding to 1002631 its reverse (1362001), we get a palindrome (2364632).

The spelling of 1002631 in words is "one million, two thousand, six hundred thirty-one".