150138331 has 4 divisors (see below), whose sum is σ = 171586672. Its totient is φ = 128689992.

The previous prime is 150138311. The next prime is 150138337. The reversal of 150138331 is 133831051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133831051 = 1999 ⋅66949.

It is a cyclic number.

It is not a de Polignac number, because 150138331 - 2⁵ = 150138299 is a prime.

It is a super-2 number, since 2×150138331² = 45083036870931122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 150138296 and 150138305.

It is not an unprimeable number, because it can be changed into a prime (150138337) 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, 10724160 + ... + 10724173.

It is an arithmetic number, because the mean of its divisors is an integer number (42896668).

Almost surely, 2^150138331 is an apocalyptic number.

150138331 is a deficient number, since it is larger than the sum of its proper divisors (21448341).

150138331 is an equidigital number, since it uses as much as digits as its factorization.

150138331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448340.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 150138331 is about 12253.0947519392. The cubic root of 150138331 is about 531.4925662113.

Adding to 150138331 its reverse (133831051), we get a palindrome (283969382).

The spelling of 150138331 in words is "one hundred fifty million, one hundred thirty-eight thousand, three hundred thirty-one".