321152613 has 4 divisors (see below), whose sum is σ = 428203488. Its totient is φ = 214101740.

The previous prime is 321152609. The next prime is 321152633. The reversal of 321152613 is 316251123.

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: 316251123 = 3 ⋅105417041.

It is a cyclic number.

It is not a de Polignac number, because 321152613 - 2² = 321152609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321152603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53525433 + ... + 53525438.

It is an arithmetic number, because the mean of its divisors is an integer number (107050872).

Almost surely, 2^321152613 is an apocalyptic number.

It is an amenable number.

321152613 is a deficient number, since it is larger than the sum of its proper divisors (107050875).

321152613 is a wasteful number, since it uses less digits than its factorization.

321152613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107050874.

The product of its digits is 1080, while the sum is 24.

The square root of 321152613 is about 17920.7313745840. The cubic root of 321152613 is about 684.8106198551.

The spelling of 321152613 in words is "three hundred twenty-one million, one hundred fifty-two thousand, six hundred thirteen".