411631261 has 4 divisors (see below), whose sum is σ = 411697312. Its totient is φ = 411565212.

The previous prime is 411631229. The next prime is 411631273. The reversal of 411631261 is 162136114.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 411631261 - 2⁵ = 411631229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411631201) 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, 22575 + ... + 36508.

It is an arithmetic number, because the mean of its divisors is an integer number (102924328).

Almost surely, 2^411631261 is an apocalyptic number.

It is an amenable number.

411631261 is a deficient number, since it is larger than the sum of its proper divisors (66051).

411631261 is an equidigital number, since it uses as much as digits as its factorization.

411631261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66050.

The product of its digits is 864, while the sum is 25.

The square root of 411631261 is about 20288.6978635890. The cubic root of 411631261 is about 743.8798300200.

Adding to 411631261 its reverse (162136114), we get a palindrome (573767375).

It can be divided in two parts, 41163 and 1261, that added together give a palindrome (42424).

The spelling of 411631261 in words is "four hundred eleven million, six hundred thirty-one thousand, two hundred sixty-one".