1013313123 has 12 divisors (see below), whose sum is σ = 1464320208. Its totient is φ = 675244080.

The previous prime is 1013313121. The next prime is 1013313137. The reversal of 1013313123 is 3213133101.

It is a happy number.

It is not a de Polignac number, because 1013313123 - 2¹ = 1013313121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013313096 and 1013313105.

It is not an unprimeable number, because it can be changed into a prime (1013313121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2215 + ... + 45072.

It is an arithmetic number, because the mean of its divisors is an integer number (122026684).

Almost surely, 2^1013313123 is an apocalyptic number.

1013313123 is a deficient number, since it is larger than the sum of its proper divisors (451007085).

1013313123 is a wasteful number, since it uses less digits than its factorization.

1013313123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49674 (or 49671 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1013313123 is about 31832.5795844446. The cubic root of 1013313123 is about 1004.4181587919.

Adding to 1013313123 its reverse (3213133101), we get a palindrome (4226446224).

The spelling of 1013313123 in words is "one billion, thirteen million, three hundred thirteen thousand, one hundred twenty-three".