1013213123 has 8 divisors (see below), whose sum is σ = 1092352800. Its totient is φ = 934244928.

The previous prime is 1013213119. The next prime is 1013213161. The reversal of 1013213123 is 3213123101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1013213123 - 2² = 1013213119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013213183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30458 + ... + 54351.

It is an arithmetic number, because the mean of its divisors is an integer number (136544100).

Almost surely, 2^1013213123 is an apocalyptic number.

1013213123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1013213123 is a deficient number, since it is larger than the sum of its proper divisors (79139677).

1013213123 is an equidigital number, since it uses as much as digits as its factorization.

1013213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85741.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1013213123 is about 31831.0088278710. The cubic root of 1013213123 is about 1004.3851169749.

Adding to 1013213123 its reverse (3213123101), we get a palindrome (4226336224).

It can be divided in two parts, 101 and 3213123, that multiplied together give a palindrome (324525423).

The spelling of 1013213123 in words is "one billion, thirteen million, two hundred thirteen thousand, one hundred twenty-three".