321151045 has 4 divisors (see below), whose sum is σ = 385381260. Its totient is φ = 256920832.

The previous prime is 321151027. The next prime is 321151069. The reversal of 321151045 is 540151123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540151123 = 37 ⋅14598679.

It can be written as a sum of positive squares in 2 ways, for example, as 154405476 + 166745569 = 12426^2 + 12913^2 .

It is a cyclic number.

It is not a de Polignac number, because 321151045 - 2¹⁵ = 321118277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32115100 + ... + 32115109.

It is an arithmetic number, because the mean of its divisors is an integer number (96345315).

Almost surely, 2^321151045 is an apocalyptic number.

It is an amenable number.

321151045 is a deficient number, since it is larger than the sum of its proper divisors (64230215).

321151045 is an equidigital number, since it uses as much as digits as its factorization.

321151045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64230214.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 321151045 is about 17920.6876263161. The cubic root of 321151045 is about 684.8095053437.

The spelling of 321151045 in words is "three hundred twenty-one million, one hundred fifty-one thousand, forty-five".