20150240331 has 32 divisors (see below), whose sum is σ = 29094912000. Its totient is φ = 12331202688.

The previous prime is 20150240309. The next prime is 20150240339. The reversal of 20150240331 is 13304205102.

It is not a de Polignac number, because 20150240331 - 2¹⁹ = 20149716043 is a prime.

It is a super-2 number, since 2×20150240331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20150240298 and 20150240307.

It is not an unprimeable number, because it can be changed into a prime (20150240339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11454630 + ... + 11456388.

It is an arithmetic number, because the mean of its divisors is an integer number (909216000).

Almost surely, 2^20150240331 is an apocalyptic number.

20150240331 is a deficient number, since it is larger than the sum of its proper divisors (8944671669).

20150240331 is a wasteful number, since it uses less digits than its factorization.

20150240331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20150240331 its reverse (13304205102), we get a palindrome (33454445433).

The spelling of 20150240331 in words is "twenty billion, one hundred fifty million, two hundred forty thousand, three hundred thirty-one".