1131060961 has 4 divisors (see below), whose sum is σ = 1131279552. Its totient is φ = 1130842372.

The previous prime is 1131060919. The next prime is 1131060967. The reversal of 1131060961 is 1690601311.

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 1131060961 - 2¹⁷ = 1130929889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131060967) 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, 101341 + ... + 111946.

It is an arithmetic number, because the mean of its divisors is an integer number (282819888).

Almost surely, 2^1131060961 is an apocalyptic number.

It is an amenable number.

1131060961 is a deficient number, since it is larger than the sum of its proper divisors (218591).

1131060961 is an equidigital number, since it uses as much as digits as its factorization.

1131060961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218590.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1131060961 is about 33631.2497686304. The cubic root of 1131060961 is about 1041.9063165246.

The spelling of 1131060961 in words is "one billion, one hundred thirty-one million, sixty thousand, nine hundred sixty-one".