1013205023 has 4 divisors (see below), whose sum is σ = 1045889088. Its totient is φ = 980520960.

The previous prime is 1013204971. The next prime is 1013205047. The reversal of 1013205023 is 3205023101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3205023101 = 7 ⋅457860443.

It is a cyclic number.

It is not a de Polignac number, because 1013205023 - 2¹⁰ = 1013203999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013204992 and 1013205010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013205073) 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, 16341986 + ... + 16342047.

It is an arithmetic number, because the mean of its divisors is an integer number (261472272).

Almost surely, 2^1013205023 is an apocalyptic number.

1013205023 is a deficient number, since it is larger than the sum of its proper divisors (32684065).

1013205023 is an equidigital number, since it uses as much as digits as its factorization.

1013205023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32684064.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1013205023 is about 31830.8815931950. The cubic root of 1013205023 is about 1004.3824404926.

Adding to 1013205023 its reverse (3205023101), we get a palindrome (4218228124).

It can be divided in two parts, 101 and 3205023, that multiplied together give a palindrome (323707323).

The spelling of 1013205023 in words is "one billion, thirteen million, two hundred five thousand, twenty-three".