31321001002 has 8 divisors (see below), whose sum is σ = 46983739716. Its totient is φ = 15659754432.

The previous prime is 31321000901. The next prime is 31321001027. The reversal of 31321001002 is 20010012313.

It can be written as a sum of positive squares in 2 ways, for example, as 28693310881 + 2627690121 = 169391^2 + 51261^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318993 + ... + 405460.

Almost surely, 2^31321001002 is an apocalyptic number.

31321001002 is a deficient number, since it is larger than the sum of its proper divisors (15662738714).

31321001002 is a wasteful number, since it uses less digits than its factorization.

31321001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746072.

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

Adding to 31321001002 its reverse (20010012313), we get a palindrome (51331013315).

The spelling of 31321001002 in words is "thirty-one billion, three hundred twenty-one million, one thousand, two".