261532343 has 2 divisors, whose sum is σ = 261532344. Its totient is φ = 261532342.

The previous prime is 261532339. The next prime is 261532363. The reversal of 261532343 is 343235162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261532343 - 2² = 261532339 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261532363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130766171 + 130766172.

It is an arithmetic number, because the mean of its divisors is an integer number (130766172).

Almost surely, 2^261532343 is an apocalyptic number.

261532343 is a deficient number, since it is larger than the sum of its proper divisors (1).

261532343 is an equidigital number, since it uses as much as digits as its factorization.

261532343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 261532343 is about 16171.9616311689. The cubic root of 261532343 is about 639.5018446116.

The spelling of 261532343 in words is "two hundred sixty-one million, five hundred thirty-two thousand, three hundred forty-three".