2102431 has 2 divisors, whose sum is σ = 2102432. Its totient is φ = 2102430.

The previous prime is 2102417. The next prime is 2102459. The reversal of 2102431 is 1342012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102431 - 2²¹ = 5279 is a prime.

It is a super-2 number, since 2×2102431² = 8840432219522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051215 + 1051216.

It is an arithmetic number, because the mean of its divisors is an integer number (1051216).

2^2102431 is an apocalyptic number.

2102431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102431 is an equidigital number, since it uses as much as digits as its factorization.

2102431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2102431 is about 1449.9762067013. The cubic root of 2102431 is about 128.1073115379.

Adding to 2102431 its reverse (1342012), we get a palindrome (3444443).

The spelling of 2102431 in words is "two million, one hundred two thousand, four hundred thirty-one".