261224343 has 12 divisors (see below), whose sum is σ = 380851848. Its totient is φ = 172521360.

The previous prime is 261224303. The next prime is 261224347. The reversal of 261224343 is 343422162.

261224343 is a `hidden beast` number, since 2 + 612 + 2 + 4 + 3 + 43 = 666.

It is not a de Polignac number, because 261224343 - 2¹⁷ = 261093271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261224347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134668 + ... + 136593.

It is an arithmetic number, because the mean of its divisors is an integer number (31737654).

Almost surely, 2^261224343 is an apocalyptic number.

261224343 is a deficient number, since it is larger than the sum of its proper divisors (119627505).

261224343 is a wasteful number, since it uses less digits than its factorization.

261224343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271374 (or 271371 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 261224343 is about 16162.4361715677. The cubic root of 261224343 is about 639.2507043035.

The spelling of 261224343 in words is "two hundred sixty-one million, two hundred twenty-four thousand, three hundred forty-three".