69161231 has 2 divisors, whose sum is σ = 69161232. Its totient is φ = 69161230.

The previous prime is 69161227. The next prime is 69161249. The reversal of 69161231 is 13216196.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69161231 - 2² = 69161227 is a prime.

It is a super-2 number, since 2×69161231² = 9566551746870722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 69161194 and 69161203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69161221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34580615 + 34580616.

It is an arithmetic number, because the mean of its divisors is an integer number (34580616).

Almost surely, 2^69161231 is an apocalyptic number.

69161231 is a deficient number, since it is larger than the sum of its proper divisors (1).

69161231 is an equidigital number, since it uses as much as digits as its factorization.

69161231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 69161231 is about 8316.3231659189. The cubic root of 69161231 is about 410.4758128552.

The spelling of 69161231 in words is "sixty-nine million, one hundred sixty-one thousand, two hundred thirty-one".