2106931 has 2 divisors, whose sum is σ = 2106932. Its totient is φ = 2106930.

The previous prime is 2106919. The next prime is 2106943. The reversal of 2106931 is 1396012.

It is a balanced prime because it is at equal distance from previous prime (2106919) and next prime (2106943).

It is a cyclic number.

It is not a de Polignac number, because 2106931 - 2¹³ = 2098739 is a prime.

It is a super-2 number, since 2×2106931² = 8878316477522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2106901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053465 + 1053466.

It is an arithmetic number, because the mean of its divisors is an integer number (1053466).

2^2106931 is an apocalyptic number.

2106931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106931 is an equidigital number, since it uses as much as digits as its factorization.

2106931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2106931 is about 1451.5271268564. The cubic root of 2106931 is about 128.1986458223.

The spelling of 2106931 in words is "two million, one hundred six thousand, nine hundred thirty-one".