1123463731 has 4 divisors (see below), whose sum is σ = 1209884032. Its totient is φ = 1037043432.

The previous prime is 1123463659. The next prime is 1123463753. The reversal of 1123463731 is 1373643211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1373643211 = 449 ⋅3059339.

It is a cyclic number.

It is not a de Polignac number, because 1123463731 - 2¹⁷ = 1123332659 is a prime.

It is a super-2 number, since 2×1123463731² = 2524341509744880722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123463693 and 1123463702.

It is not an unprimeable number, because it can be changed into a prime (1123463771) 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, 43210131 + ... + 43210156.

It is an arithmetic number, because the mean of its divisors is an integer number (302471008).

Almost surely, 2^1123463731 is an apocalyptic number.

1123463731 is a deficient number, since it is larger than the sum of its proper divisors (86420301).

1123463731 is an equidigital number, since it uses as much as digits as its factorization.

1123463731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86420300.

The product of its digits is 9072, while the sum is 31.

The square root of 1123463731 is about 33518.1104926874. The cubic root of 1123463731 is about 1039.5682783419.

The spelling of 1123463731 in words is "one billion, one hundred twenty-three million, four hundred sixty-three thousand, seven hundred thirty-one".