2661104031 has 4 divisors (see below), whose sum is σ = 3548138712. Its totient is φ = 1774069352.

The previous prime is 2661104021. The next prime is 2661104051. The reversal of 2661104031 is 1304011662.

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

It is a cyclic number.

It is not a de Polignac number, because 2661104031 - 2²¹ = 2659006879 is a prime.

It is a super-2 number, since 2×2661104031² = 14162949327608897922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2661103992 and 2661104010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661104011) 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, 443517336 + ... + 443517341.

It is an arithmetic number, because the mean of its divisors is an integer number (887034678).

Almost surely, 2^2661104031 is an apocalyptic number.

2661104031 is a deficient number, since it is larger than the sum of its proper divisors (887034681).

2661104031 is an equidigital number, since it uses as much as digits as its factorization.

2661104031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887034680.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2661104031 is about 51585.8898440261. The cubic root of 2661104031 is about 1385.7576484277.

Adding to 2661104031 its reverse (1304011662), we get a palindrome (3965115693).

The spelling of 2661104031 in words is "two billion, six hundred sixty-one million, one hundred four thousand, thirty-one".