31230042002 has 16 divisors (see below), whose sum is σ = 47132121240. Its totient is φ = 15519397632.

The previous prime is 31230041959. The next prime is 31230042031. The reversal of 31230042002 is 20024003213.

It can be written as a sum of positive squares in 4 ways, for example, as 30979168081 + 250873921 = 176009^2 + 15839^2 .

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, 1103258 + ... + 1131210.

Almost surely, 2^31230042002 is an apocalyptic number.

31230042002 is a deficient number, since it is larger than the sum of its proper divisors (15902079238).

31230042002 is a wasteful number, since it uses less digits than its factorization.

31230042002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31357.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 31230042002 its reverse (20024003213), we get a palindrome (51254045215).

The spelling of 31230042002 in words is "thirty-one billion, two hundred thirty million, forty-two thousand, two".