1123527631 has 4 divisors (see below), whose sum is σ = 1128349872. Its totient is φ = 1118705392.

The previous prime is 1123527617. The next prime is 1123527649. The reversal of 1123527631 is 1367253211.

It is a happy number.

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 1123527631 - 2¹⁵ = 1123494863 is a prime.

It is a super-2 number, since 2×1123527631² = 2524628675240944322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123527593 and 1123527602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123527611) 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, 2410771 + ... + 2411236.

It is an arithmetic number, because the mean of its divisors is an integer number (282087468).

Almost surely, 2^1123527631 is an apocalyptic number.

1123527631 is a deficient number, since it is larger than the sum of its proper divisors (4822241).

1123527631 is an equidigital number, since it uses as much as digits as its factorization.

1123527631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822240.

The product of its digits is 7560, while the sum is 31.

The square root of 1123527631 is about 33519.0636951571. The cubic root of 1123527631 is about 1039.5879873756.

The spelling of 1123527631 in words is "one billion, one hundred twenty-three million, five hundred twenty-seven thousand, six hundred thirty-one".