2119631 has 2 divisors, whose sum is σ = 2119632. Its totient is φ = 2119630.

The previous prime is 2119627. The next prime is 2119643. The reversal of 2119631 is 1369112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2119631 - 2² = 2119627 is a prime.

It is a super-2 number, since 2×2119631² = 8985671152322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2119597 and 2119606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2119651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059815 + 1059816.

It is an arithmetic number, because the mean of its divisors is an integer number (1059816).

2^2119631 is an apocalyptic number.

2119631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119631 is an equidigital number, since it uses as much as digits as its factorization.

2119631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

The square root of 2119631 is about 1455.8952572215. The cubic root of 2119631 is about 128.4557120513.

The spelling of 2119631 in words is "two million, one hundred nineteen thousand, six hundred thirty-one".