1513123 has 2 divisors, whose sum is σ = 1513124. Its totient is φ = 1513122.

The previous prime is 1513121. The next prime is 1513139. The reversal of 1513123 is 3213151.

It is an a-pointer prime, because the next prime (1513139) can be obtained adding 1513123 to its sum of digits (16).

It is a weak prime.

It is an emirp because it is prime and its reverse (3213151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1513123 - 2¹ = 1513121 is a prime.

Together with 1513121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1513097 and 1513106.

It is not a weakly prime, because it can be changed into another prime (1513121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756561 + 756562.

It is an arithmetic number, because the mean of its divisors is an integer number (756562).

2^1513123 is an apocalyptic number.

1513123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513123 is an equidigital number, since it uses as much as digits as its factorization.

1513123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 16.

The square root of 1513123 is about 1230.0906470663. The cubic root of 1513123 is about 114.8042795654.

Adding to 1513123 its reverse (3213151), we get a palindrome (4726274).

The spelling of 1513123 in words is "one million, five hundred thirteen thousand, one hundred twenty-three".