1013155423 has 32 divisors (see below), whose sum is σ = 1234833408. Its totient is φ = 812851200.

The previous prime is 1013155417. The next prime is 1013155463. The reversal of 1013155423 is 3245513101.

It is a happy number.

It is not a de Polignac number, because 1013155423 - 2⁵ = 1013155391 is a prime.

It is a super-2 number, since 2×1013155423² = 2052967822308617858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013155463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2063208 + ... + 2063698.

It is an arithmetic number, because the mean of its divisors is an integer number (38588544).

Almost surely, 2^1013155423 is an apocalyptic number.

1013155423 is a deficient number, since it is larger than the sum of its proper divisors (221677985).

1013155423 is a wasteful number, since it uses less digits than its factorization.

1013155423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1013155423 is about 31830.1024660619. The cubic root of 1013155423 is about 1004.3660508574.

Adding to 1013155423 its reverse (3245513101), we get a palindrome (4258668524).

The spelling of 1013155423 in words is "one billion, thirteen million, one hundred fifty-five thousand, four hundred twenty-three".