69428231 has 2 divisors, whose sum is σ = 69428232. Its totient is φ = 69428230.

The previous prime is 69428213. The next prime is 69428257. The reversal of 69428231 is 13282496.

Together with previous prime (69428213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69428231 - 2⁶ = 69428167 is a prime.

It is a super-2 number, since 2×69428231² = 9640558519578722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69428191 and 69428200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69428201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34714115 + 34714116.

It is an arithmetic number, because the mean of its divisors is an integer number (34714116).

Almost surely, 2^69428231 is an apocalyptic number.

69428231 is a deficient number, since it is larger than the sum of its proper divisors (1).

69428231 is an equidigital number, since it uses as much as digits as its factorization.

69428231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 69428231 is about 8332.3604698789. The cubic root of 69428231 is about 411.0033545980.

The spelling of 69428231 in words is "sixty-nine million, four hundred twenty-eight thousand, two hundred thirty-one".