69431 has 2 divisors, whose sum is σ = 69432. Its totient is φ = 69430.

The previous prime is 69427. The next prime is 69439. The reversal of 69431 is 13496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69431 - 2² = 69427 is a prime.

It is a super-2 number, since 2×69431² = 9641327522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 13 and base 15.

It is a junction number, because it is equal to n+sod(n) for n = 69397 and 69406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34715 + 34716.

It is an arithmetic number, because the mean of its divisors is an integer number (34716).

2⁶⁹⁴³¹ is an apocalyptic number.

69431 is a deficient number, since it is larger than the sum of its proper divisors (1).

69431 is an equidigital number, since it uses as much as digits as its factorization.

69431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 69431 is about 263.4976280728. The cubic root of 69431 is about 41.1008818529.

The spelling of 69431 in words is "sixty-nine thousand, four hundred thirty-one".