31142230203 has 16 divisors (see below), whose sum is σ = 49091201280. Its totient is φ = 17181919776.

The previous prime is 31142230187. The next prime is 31142230241. The reversal of 31142230203 is 30203224113.

It is not a de Polignac number, because 31142230203 - 2⁴ = 31142230187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 31142230203.

It is not an unprimeable number, because it can be changed into a prime (31142230243) 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, 25567725 + ... + 25568942.

It is an arithmetic number, because the mean of its divisors is an integer number (3068200080).

Almost surely, 2^31142230203 is an apocalyptic number.

31142230203 is a deficient number, since it is larger than the sum of its proper divisors (17948971077).

31142230203 is a wasteful number, since it uses less digits than its factorization.

31142230203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51136706.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31142230203 its reverse (30203224113), we get a palindrome (61345454316).

The spelling of 31142230203 in words is "thirty-one billion, one hundred forty-two million, two hundred thirty thousand, two hundred three".