7123013 has 4 divisors (see below), whose sum is σ = 7132608. Its totient is φ = 7113420.

The previous prime is 7123003. The next prime is 7123021. The reversal of 7123013 is 3103217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3103217 = 13 ⋅238709.

It is a cyclic number.

It is not a de Polignac number, because 7123013 - 2⁸ = 7122757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7122982 and 7123000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7123003) 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, 3581 + ... + 5202.

It is an arithmetic number, because the mean of its divisors is an integer number (1783152).

Almost surely, 2^7123013 is an apocalyptic number.

It is an amenable number.

7123013 is a deficient number, since it is larger than the sum of its proper divisors (9595).

7123013 is an equidigital number, since it uses as much as digits as its factorization.

7123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9594.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 7123013 is about 2668.8973378532. The cubic root of 7123013 is about 192.4071672476.

The spelling of 7123013 in words is "seven million, one hundred twenty-three thousand, thirteen".