150131321 has 4 divisors (see below), whose sum is σ = 150689700. Its totient is φ = 149572944.

The previous prime is 150131291. The next prime is 150131329. The reversal of 150131321 is 123131051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92371321 + 57760000 = 9611^2 + 7600^2 .

It is a cyclic number.

It is not a de Polignac number, because 150131321 - 2⁶ = 150131257 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 150131321.

It is not an unprimeable number, because it can be changed into a prime (150131329) 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, 278786 + ... + 279323.

It is an arithmetic number, because the mean of its divisors is an integer number (37672425).

Almost surely, 2^150131321 is an apocalyptic number.

It is an amenable number.

150131321 is a deficient number, since it is larger than the sum of its proper divisors (558379).

150131321 is an equidigital number, since it uses as much as digits as its factorization.

150131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558378.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 150131321 is about 12252.8086984169. The cubic root of 150131321 is about 531.4842942378.

Adding to 150131321 its reverse (123131051), we get a palindrome (273262372).

The spelling of 150131321 in words is "one hundred fifty million, one hundred thirty-one thousand, three hundred twenty-one".