20151744331 has 16 divisors (see below), whose sum is σ = 21531400704. Its totient is φ = 18814650624.

The previous prime is 20151744329. The next prime is 20151744367. The reversal of 20151744331 is 13344715102.

It is not a de Polignac number, because 20151744331 - 2¹ = 20151744329 is a prime.

It is a super-2 number, since 2×20151744331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20151744293 and 20151744302.

It is not an unprimeable number, because it can be changed into a prime (20151744031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1672330 + ... + 1684336.

It is an arithmetic number, because the mean of its divisors is an integer number (1345712544).

Almost surely, 2^20151744331 is an apocalyptic number.

20151744331 is a deficient number, since it is larger than the sum of its proper divisors (1379656373).

20151744331 is a wasteful number, since it uses less digits than its factorization.

20151744331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13770.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 20151744331 in words is "twenty billion, one hundred fifty-one million, seven hundred forty-four thousand, three hundred thirty-one".