1015145023 has 4 divisors (see below), whose sum is σ = 1027995040. Its totient is φ = 1002295008.

The previous prime is 1015145009. The next prime is 1015145051. The reversal of 1015145023 is 3205415101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3205415101 = 7 ⋅457916443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1015145023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1015144985 and 1015145003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015145063) 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, 6424890 + ... + 6425047.

It is an arithmetic number, because the mean of its divisors is an integer number (256998760).

Almost surely, 2^1015145023 is an apocalyptic number.

1015145023 is a deficient number, since it is larger than the sum of its proper divisors (12850017).

1015145023 is an equidigital number, since it uses as much as digits as its factorization.

1015145023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12850016.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1015145023 is about 31861.3405712942. The cubic root of 1015145023 is about 1005.0230675464.

The spelling of 1015145023 in words is "one billion, fifteen million, one hundred forty-five thousand, twenty-three".