31248002 has 4 divisors (see below), whose sum is σ = 46872006. Its totient is φ = 15624000.

The previous prime is 31248001. The next prime is 31248047. The reversal of 31248002 is 20084213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21631801 + 9616201 = 4651^2 + 3101^2 .

It is not an unprimeable number, because it can be changed into a prime (31248001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7811999 + ... + 7812002.

Almost surely, 2^31248002 is an apocalyptic number.

31248002 is a deficient number, since it is larger than the sum of its proper divisors (15624004).

31248002 is a wasteful number, since it uses less digits than its factorization.

31248002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15624003.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 31248002 is about 5589.9912343402. The cubic root of 31248002 is about 314.9735494713.

The spelling of 31248002 in words is "thirty-one million, two hundred forty-eight thousand, two".