20031143342 has 16 divisors (see below), whose sum is σ = 34342710912. Its totient is φ = 8583873720.

The previous prime is 20031143323. The next prime is 20031143347. The reversal of 20031143342 is 24334113002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031143347) 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, 72893 + ... + 213015.

It is an arithmetic number, because the mean of its divisors is an integer number (2146419432).

Almost surely, 2^20031143342 is an apocalyptic number.

20031143342 is a deficient number, since it is larger than the sum of its proper divisors (14311567570).

20031143342 is a wasteful number, since it uses less digits than its factorization.

20031143342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150343.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20031143342 its reverse (24334113002), we get a palindrome (44365256344).

The spelling of 20031143342 in words is "twenty billion, thirty-one million, one hundred forty-three thousand, three hundred forty-two".