20142031515 has 16 divisors (see below), whose sum is σ = 32379991296. Its totient is φ = 10691503200.

The previous prime is 20142031513. The next prime is 20142031531. The reversal of 20142031515 is 51513024102.

It is a happy number.

It is not a de Polignac number, because 20142031515 - 2¹ = 20142031513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20142031513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3178831 + ... + 3185160.

It is an arithmetic number, because the mean of its divisors is an integer number (2023749456).

Almost surely, 2^20142031515 is an apocalyptic number.

20142031515 is a deficient number, since it is larger than the sum of its proper divisors (12237959781).

20142031515 is a wasteful number, since it uses less digits than its factorization.

20142031515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364210.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20142031515 its reverse (51513024102), we get a palindrome (71655055617).

The spelling of 20142031515 in words is "twenty billion, one hundred forty-two million, thirty-one thousand, five hundred fifteen".