261074131 has 8 divisors (see below), whose sum is σ = 266417424. Its totient is φ = 255746400.

The previous prime is 261074111. The next prime is 261074141. The reversal of 261074131 is 131470162.

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

It is a cyclic number.

It is not a de Polignac number, because 261074131 - 2⁹ = 261073619 is a prime.

It is a super-2 number, since 2×261074131² = 136319403754810322, 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 = 261074096 and 261074105.

It is not an unprimeable number, because it can be changed into a prime (261074111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33640 + ... + 40666.

It is an arithmetic number, because the mean of its divisors is an integer number (33302178).

Almost surely, 2^261074131 is an apocalyptic number.

261074131 is a deficient number, since it is larger than the sum of its proper divisors (5343293).

261074131 is an equidigital number, since it uses as much as digits as its factorization.

261074131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7781.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 261074131 is about 16157.7885553686. The cubic root of 261074131 is about 639.1281512303.

The spelling of 261074131 in words is "two hundred sixty-one million, seventy-four thousand, one hundred thirty-one".