20031651244 has 24 divisors (see below), whose sum is σ = 38253491136. Its totient is φ = 9102618000.

The previous prime is 20031651229. The next prime is 20031651247. The reversal of 20031651244 is 44215613002.

It is a super-2 number, since 2×20031651244² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20031651247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88399 + ... + 218809.

It is an arithmetic number, because the mean of its divisors is an integer number (1593895464).

Almost surely, 2^20031651244 is an apocalyptic number.

It is an amenable number.

20031651244 is a deficient number, since it is larger than the sum of its proper divisors (18221839892).

20031651244 is a wasteful number, since it uses less digits than its factorization.

20031651244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133917 (or 133915 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 20031651244 in words is "twenty billion, thirty-one million, six hundred fifty-one thousand, two hundred forty-four".