31030970 has 16 divisors (see below), whose sum is σ = 56910600. Its totient is φ = 12177984.

The previous prime is 31030949. The next prime is 31030981. The reversal of 31030970 is 7903013.

It can be written as a sum of positive squares in 4 ways, for example, as 26204161 + 4826809 = 5119^2 + 2197^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 28745 + ... + 29804.

Almost surely, 2^31030970 is an apocalyptic number.

31030970 is a deficient number, since it is larger than the sum of its proper divisors (25879630).

31030970 is a wasteful number, since it uses less digits than its factorization.

31030970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58609.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 31030970 is about 5570.5448566545. The cubic root of 31030970 is about 314.2426417753.

Adding to 31030970 its reverse (7903013), we get a palindrome (38933983).

The spelling of 31030970 in words is "thirty-one million, thirty thousand, nine hundred seventy".