26231129 has 2 divisors, whose sum is σ = 26231130. Its totient is φ = 26231128.

The previous prime is 26231099. The next prime is 26231137. The reversal of 26231129 is 92113262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25270729 + 960400 = 5027^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 26231129 - 2¹⁶ = 26165593 is a prime.

It is a super-2 number, since 2×26231129² = 1376144257229282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26231098 and 26231107.

It is not a weakly prime, because it can be changed into another prime (26231329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13115564 + 13115565.

It is an arithmetic number, because the mean of its divisors is an integer number (13115565).

Almost surely, 2^26231129 is an apocalyptic number.

It is an amenable number.

26231129 is a deficient number, since it is larger than the sum of its proper divisors (1).

26231129 is an equidigital number, since it uses as much as digits as its factorization.

26231129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 26231129 is about 5121.6334308500. The cubic root of 26231129 is about 297.1248629455.

The spelling of 26231129 in words is "twenty-six million, two hundred thirty-one thousand, one hundred twenty-nine".