1123051973 has 4 divisors (see below), whose sum is σ = 1159279488. Its totient is φ = 1086824460.

The previous prime is 1123051939. The next prime is 1123051987. The reversal of 1123051973 is 3791503211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3791503211 = 409 ⋅9270179.

It is a cyclic number.

It is not a de Polignac number, because 1123051973 - 2¹⁶ = 1122986437 is a prime.

It is a super-3 number, since 3×1123051973³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123051073) 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, 18113711 + ... + 18113772.

It is an arithmetic number, because the mean of its divisors is an integer number (289819872).

Almost surely, 2^1123051973 is an apocalyptic number.

It is an amenable number.

1123051973 is a deficient number, since it is larger than the sum of its proper divisors (36227515).

1123051973 is an equidigital number, since it uses as much as digits as its factorization.

1123051973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36227514.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 1123051973 is about 33511.9676086022. The cubic root of 1123051973 is about 1039.4412595966.

The spelling of 1123051973 in words is "one billion, one hundred twenty-three million, fifty-one thousand, nine hundred seventy-three".