1121915023 has 2 divisors, whose sum is σ = 1121915024. Its totient is φ = 1121915022.

The previous prime is 1121914943. The next prime is 1121915087. The reversal of 1121915023 is 3205191211.

It is a strong prime.

It is an emirp because it is prime and its reverse (3205191211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121915023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121915423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560957511 + 560957512.

It is an arithmetic number, because the mean of its divisors is an integer number (560957512).

Almost surely, 2^1121915023 is an apocalyptic number.

1121915023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121915023 is an equidigital number, since it uses as much as digits as its factorization.

1121915023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1121915023 is about 33494.9999701448. Note that the first 4 decimals coincide. The cubic root of 1121915023 is about 1039.0903729654.

The spelling of 1121915023 in words is "one billion, one hundred twenty-one million, nine hundred fifteen thousand, twenty-three".