210031030907 has 2 divisors, whose sum is σ = 210031030908. Its totient is φ = 210031030906.

The previous prime is 210031030861. The next prime is 210031030921. The reversal of 210031030907 is 709030130012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210031030907 is a prime.

It is a super-2 number, since 2×210031030907² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210031030607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105015515453 + 105015515454.

It is an arithmetic number, because the mean of its divisors is an integer number (105015515454).

Almost surely, 2^210031030907 is an apocalyptic number.

210031030907 is a deficient number, since it is larger than the sum of its proper divisors (1).

210031030907 is an equidigital number, since it uses as much as digits as its factorization.

210031030907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

Adding to 210031030907 its reverse (709030130012), we get a palindrome (919061160919).

The spelling of 210031030907 in words is "two hundred ten billion, thirty-one million, thirty thousand, nine hundred seven".