31020002 has 16 divisors (see below), whose sum is σ = 53057592. Its totient is φ = 13474560.

The previous prime is 31020001. The next prime is 31020007. The reversal of 31020002 is 20002013.

It can be written as a sum of positive squares in 4 ways, for example, as 24512401 + 6507601 = 4951^2 + 2551^2 .

It is not an unprimeable number, because it can be changed into a prime (31020001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34649 + ... + 35532.

Almost surely, 2^31020002 is an apocalyptic number.

31020002 is a deficient number, since it is larger than the sum of its proper divisors (22037590).

31020002 is a wasteful number, since it uses less digits than its factorization.

31020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70213.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 31020002 is about 5569.5603058051. The cubic root of 31020002 is about 314.2056140420.

Adding to 31020002 its reverse (20002013), we get a palindrome (51022015).

The spelling of 31020002 in words is "thirty-one million, twenty thousand, two".