1133231761 has 6 divisors (see below), whose sum is σ = 1160200770. Its totient is φ = 1106875728.

The previous prime is 1133231719. The next prime is 1133231783. The reversal of 1133231761 is 1671323311.

It can be written as a sum of positive squares in only one way, i.e., 1124931600 + 8300161 = 33540^2 + 2881^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1133231761 is a prime.

It is a super-2 number, since 2×1133231761² = 2568428448278322242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133231161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 304596 + ... + 308293.

It is an arithmetic number, because the mean of its divisors is an integer number (193366795).

Almost surely, 2^1133231761 is an apocalyptic number.

It is an amenable number.

1133231761 is a deficient number, since it is larger than the sum of its proper divisors (26969009).

1133231761 is an frugal number, since it uses more digits than its factorization.

1133231761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612975 (or 612932 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The square root of 1133231761 is about 33663.5078534605. The cubic root of 1133231761 is about 1042.5724535634.

The spelling of 1133231761 in words is "one billion, one hundred thirty-three million, two hundred thirty-one thousand, seven hundred sixty-one".