151366321 has 4 divisors (see below), whose sum is σ = 154886512. Its totient is φ = 147846132.

The previous prime is 151366309. The next prime is 151366339. The reversal of 151366321 is 123663151.

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.

It is a cyclic number.

It is not a de Polignac number, because 151366321 - 2¹¹ = 151364273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151366321.

It is not an unprimeable number, because it can be changed into a prime (151366361) 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, 1760031 + ... + 1760116.

It is an arithmetic number, because the mean of its divisors is an integer number (38721628).

Almost surely, 2^151366321 is an apocalyptic number.

It is an amenable number.

151366321 is a deficient number, since it is larger than the sum of its proper divisors (3520191).

151366321 is an equidigital number, since it uses as much as digits as its factorization.

151366321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520190.

The product of its digits is 3240, while the sum is 28.

The square root of 151366321 is about 12303.1020884978. The cubic root of 151366321 is about 532.9376695190.

The spelling of 151366321 in words is "one hundred fifty-one million, three hundred sixty-six thousand, three hundred twenty-one".