26630431 has 2 divisors, whose sum is σ = 26630432. Its totient is φ = 26630430.

The previous prime is 26630411. The next prime is 26630441. The reversal of 26630431 is 13403662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26630431 - 2¹¹ = 26628383 is a prime.

It is a super-2 number, since 2×26630431² = 1418359710491522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26630396 and 26630405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26630411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13315215 + 13315216.

It is an arithmetic number, because the mean of its divisors is an integer number (13315216).

Almost surely, 2^26630431 is an apocalyptic number.

26630431 is a deficient number, since it is larger than the sum of its proper divisors (1).

26630431 is an equidigital number, since it uses as much as digits as its factorization.

26630431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 26630431 is about 5160.4680989228. The cubic root of 26630431 is about 298.6249328567.

The spelling of 26630431 in words is "twenty-six million, six hundred thirty thousand, four hundred thirty-one".