31630004002 has 16 divisors (see below), whose sum is σ = 47650145400. Its totient is φ = 15746693760.

The previous prime is 31630003913. The next prime is 31630004047. The reversal of 31630004002 is 20040003613.

It can be written as a sum of positive squares in 4 ways, for example, as 14044857121 + 17585146881 = 118511^2 + 132609^2 .

It is a super-3 number, since 3×31630004002³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919774 + ... + 953542.

Almost surely, 2^31630004002 is an apocalyptic number.

31630004002 is a deficient number, since it is larger than the sum of its proper divisors (16020141398).

31630004002 is a wasteful number, since it uses less digits than its factorization.

31630004002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35781.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31630004002 its reverse (20040003613), we get a palindrome (51670007615).

The spelling of 31630004002 in words is "thirty-one billion, six hundred thirty million, four thousand, two".