31430130002 has 4 divisors (see below), whose sum is σ = 47145195006. Its totient is φ = 15715065000.

The previous prime is 31430129999. The next prime is 31430130059. The reversal of 31430130002 is 20003103413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20003103413 = 1069 ⋅18711977.

It can be written as a sum of positive squares in only one way, i.e., 23629530961 + 7800599041 = 153719^2 + 88321^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7857532499 + ... + 7857532502.

Almost surely, 2^31430130002 is an apocalyptic number.

31430130002 is a deficient number, since it is larger than the sum of its proper divisors (15715065004).

31430130002 is a wasteful number, since it uses less digits than its factorization.

31430130002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15715065003.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31430130002 its reverse (20003103413), we get a palindrome (51433233415).

The spelling of 31430130002 in words is "thirty-one billion, four hundred thirty million, one hundred thirty thousand, two".