261365134 has 8 divisors (see below), whose sum is σ = 392348448. Its totient is φ = 130582320.

The previous prime is 261365131. The next prime is 261365141. The reversal of 261365134 is 431563162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 261365096 and 261365105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261365131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46822 + ... + 52105.

It is an arithmetic number, because the mean of its divisors is an integer number (49043556).

Almost surely, 2^261365134 is an apocalyptic number.

261365134 is a deficient number, since it is larger than the sum of its proper divisors (130983314).

261365134 is a wasteful number, since it uses less digits than its factorization.

261365134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100250.

The product of its digits is 12960, while the sum is 31.

The square root of 261365134 is about 16166.7910854319. The cubic root of 261365134 is about 639.3655284435.

The spelling of 261365134 in words is "two hundred sixty-one million, three hundred sixty-five thousand, one hundred thirty-four".