152321013 has 16 divisors (see below), whose sum is σ = 243019840. Its totient is φ = 93735792.

The previous prime is 152320979. The next prime is 152321017. The reversal of 152321013 is 310123251.

It is a de Polignac number, because none of the positive numbers 2^k-152321013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152321017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216631 + ... + 217332.

It is an arithmetic number, because the mean of its divisors is an integer number (15188740).

Almost surely, 2^152321013 is an apocalyptic number.

152321013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

152321013 is a deficient number, since it is larger than the sum of its proper divisors (90698827).

152321013 is a wasteful number, since it uses less digits than its factorization.

152321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433985 (or 433979 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 152321013 is about 12341.8399357632. The cubic root of 152321013 is about 534.0557636502.

Adding to 152321013 its reverse (310123251), we get a palindrome (462444264).

The spelling of 152321013 in words is "one hundred fifty-two million, three hundred twenty-one thousand, thirteen".