269431 has 2 divisors, whose sum is σ = 269432. Its totient is φ = 269430.

The previous prime is 269429. The next prime is 269441. The reversal of 269431 is 134962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 269431 - 2¹ = 269429 is a prime.

It is a super-2 number, since 2×269431² = 145186127522, which contains 22 as substring.

Together with 269429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 269396 and 269405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (269441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134715 + 134716.

It is an arithmetic number, because the mean of its divisors is an integer number (134716).

2²⁶⁹⁴³¹ is an apocalyptic number.

269431 is a deficient number, since it is larger than the sum of its proper divisors (1).

269431 is an equidigital number, since it uses as much as digits as its factorization.

269431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 269431 is about 519.0674329988. The cubic root of 269431 is about 64.5876060533.

The spelling of 269431 in words is "two hundred sixty-nine thousand, four hundred thirty-one".