31142100243 has 16 divisors (see below), whose sum is σ = 41638012416. Its totient is φ = 20703839520.

The previous prime is 31142100239. The next prime is 31142100251. The reversal of 31142100243 is 34200124113.

It is not a de Polignac number, because 31142100243 - 2² = 31142100239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31142140243) 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, 3961705 + ... + 3969557.

It is an arithmetic number, because the mean of its divisors is an integer number (2602375776).

Almost surely, 2^31142100243 is an apocalyptic number.

31142100243 is a deficient number, since it is larger than the sum of its proper divisors (10495912173).

31142100243 is a wasteful number, since it uses less digits than its factorization.

31142100243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11354.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31142100243 its reverse (34200124113), we get a palindrome (65342224356).

The spelling of 31142100243 in words is "thirty-one billion, one hundred forty-two million, one hundred thousand, two hundred forty-three".