2111454431 has 2 divisors, whose sum is σ = 2111454432. Its totient is φ = 2111454430.

The previous prime is 2111454407. The next prime is 2111454467. The reversal of 2111454431 is 1344541112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111454431 is a prime.

It is a super-2 number, since 2×2111454431² = 8916479628379067522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2111454431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111454481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055727215 + 1055727216.

It is an arithmetic number, because the mean of its divisors is an integer number (1055727216).

Almost surely, 2^2111454431 is an apocalyptic number.

2111454431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111454431 is an equidigital number, since it uses as much as digits as its factorization.

2111454431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 26.

The square root of 2111454431 is about 45950.5650781359. The cubic root of 2111454431 is about 1282.9032470237.

Adding to 2111454431 its reverse (1344541112), we get a palindrome (3455995543).

The spelling of 2111454431 in words is "two billion, one hundred eleven million, four hundred fifty-four thousand, four hundred thirty-one".