150312023521 has 4 divisors (see below), whose sum is σ = 163976752944. Its totient is φ = 136647294100.

The previous prime is 150312023509. The next prime is 150312023593. The reversal of 150312023521 is 125320213051.

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: 125320213051 = 11 ⋅11392746641.

It is a cyclic number.

It is not a de Polignac number, because 150312023521 - 2⁹ = 150312023009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150312021521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6832364695 + ... + 6832364716.

It is an arithmetic number, because the mean of its divisors is an integer number (40994188236).

Almost surely, 2^150312023521 is an apocalyptic number.

150312023521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

150312023521 is a deficient number, since it is larger than the sum of its proper divisors (13664729423).

150312023521 is a wasteful number, since it uses less digits than its factorization.

150312023521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13664729422.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 150312023521 its reverse (125320213051), we get a palindrome (275632236572).

The spelling of 150312023521 in words is "one hundred fifty billion, three hundred twelve million, twenty-three thousand, five hundred twenty-one".