1013457823 has 4 divisors (see below), whose sum is σ = 1158237520. Its totient is φ = 868678128.

The previous prime is 1013457821. The next prime is 1013457829. The reversal of 1013457823 is 3287543101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3287543101 = 73 ⋅45034837.

It is a cyclic number.

It is not a de Polignac number, because 1013457823 - 2¹ = 1013457821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013457821) 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, 72389838 + ... + 72389851.

It is an arithmetic number, because the mean of its divisors is an integer number (289559380).

Almost surely, 2^1013457823 is an apocalyptic number.

1013457823 is a deficient number, since it is larger than the sum of its proper divisors (144779697).

1013457823 is an equidigital number, since it uses as much as digits as its factorization.

1013457823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144779696.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1013457823 is about 31834.8523319961. The cubic root of 1013457823 is about 1004.4659664526.

The spelling of 1013457823 in words is "one billion, thirteen million, four hundred fifty-seven thousand, eight hundred twenty-three".