31324304002 has 4 divisors (see below), whose sum is σ = 46986456006. Its totient is φ = 15662152000.

The previous prime is 31324303981. The next prime is 31324304021. The reversal of 31324304002 is 20040342313.

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: 20040342313 = 23 ⋅871319231.

It can be written as a sum of positive squares in only one way, i.e., 17988442641 + 13335861361 = 134121^2 + 115481^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7831075999 + ... + 7831076002.

Almost surely, 2^31324304002 is an apocalyptic number.

31324304002 is a deficient number, since it is larger than the sum of its proper divisors (15662152004).

31324304002 is a wasteful number, since it uses less digits than its factorization.

31324304002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662152003.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31324304002 its reverse (20040342313), we get a palindrome (51364646315).

The spelling of 31324304002 in words is "thirty-one billion, three hundred twenty-four million, three hundred four thousand, two".