26973431 has 2 divisors, whose sum is σ = 26973432. Its totient is φ = 26973430.

The previous prime is 26973421. The next prime is 26973433. The reversal of 26973431 is 13437962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26973431 - 2¹⁸ = 26711287 is a prime.

It is a super-2 number, since 2×26973431² = 1455131959823522, which contains 22 as substring.

Together with 26973433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 26973391 and 26973400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26973433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13486715 + 13486716.

It is an arithmetic number, because the mean of its divisors is an integer number (13486716).

Almost surely, 2^26973431 is an apocalyptic number.

26973431 is a deficient number, since it is larger than the sum of its proper divisors (1).

26973431 is an equidigital number, since it uses as much as digits as its factorization.

26973431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 26973431 is about 5193.5951902319. The cubic root of 26973431 is about 299.9015640010.

The spelling of 26973431 in words is "twenty-six million, nine hundred seventy-three thousand, four hundred thirty-one".