1131261041 has 8 divisors (see below), whose sum is σ = 1138423104. Its totient is φ = 1124109360.

The previous prime is 1131261037. The next prime is 1131261059. The reversal of 1131261041 is 1401621311.

It is a happy number.

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 1131261041 - 2² = 1131261037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131261011) 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, 423476 + ... + 426138.

It is an arithmetic number, because the mean of its divisors is an integer number (142302888).

Almost surely, 2^1131261041 is an apocalyptic number.

It is an amenable number.

1131261041 is a deficient number, since it is larger than the sum of its proper divisors (7162063).

1131261041 is a wasteful number, since it uses less digits than its factorization.

1131261041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5191.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1131261041 is about 33634.2242514972. The cubic root of 1131261041 is about 1041.9677492066.

Adding to 1131261041 its reverse (1401621311), we get a palindrome (2532882352).

The spelling of 1131261041 in words is "one billion, one hundred thirty-one million, two hundred sixty-one thousand, forty-one".