261014331 has 4 divisors (see below), whose sum is σ = 348019112. Its totient is φ = 174009552.

The previous prime is 261014329. The next prime is 261014363. The reversal of 261014331 is 133410162.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 261014331 - 2¹ = 261014329 is a prime.

It is a super-2 number, since 2×261014331² = 136256961974755122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261014298 and 261014307.

It is not an unprimeable number, because it can be changed into a prime (261014321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43502386 + ... + 43502391.

It is an arithmetic number, because the mean of its divisors is an integer number (87004778).

Almost surely, 2^261014331 is an apocalyptic number.

261014331 is a deficient number, since it is larger than the sum of its proper divisors (87004781).

261014331 is an equidigital number, since it uses as much as digits as its factorization.

261014331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87004780.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 261014331 is about 16155.9379486305. The cubic root of 261014331 is about 639.0793492779.

Adding to 261014331 its reverse (133410162), we get a palindrome (394424493).

The spelling of 261014331 in words is "two hundred sixty-one million, fourteen thousand, three hundred thirty-one".