2130631 has 2 divisors, whose sum is σ = 2130632. Its totient is φ = 2130630.

The previous prime is 2130619. The next prime is 2130671. The reversal of 2130631 is 1360312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2130631 - 2⁷ = 2130503 is a prime.

It is a super-2 number, since 2×2130631² = 9079176916322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065315 + 1065316.

It is an arithmetic number, because the mean of its divisors is an integer number (1065316).

2^2130631 is an apocalyptic number.

2130631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130631 is an equidigital number, since it uses as much as digits as its factorization.

2130631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2130631 is about 1459.6681129627. The cubic root of 2130631 is about 128.6775392687.

Adding to 2130631 its reverse (1360312), we get a palindrome (3490943).

The spelling of 2130631 in words is "two million, one hundred thirty thousand, six hundred thirty-one".