31404142100242 has 8 divisors (see below), whose sum is σ = 47163589782732. Its totient is φ = 15682945506000.

The previous prime is 31404142100207. The next prime is 31404142100249. The reversal of 31404142100242 is 24200124140413.

It can be written as a sum of positive squares in 2 ways, for example, as 27463794029281 + 3940348070961 = 5240591^2 + 1985031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31404142100242.

It is not an unprimeable number, because it can be changed into a prime (31404142100249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9562770009 + ... + 9562773292.

Almost surely, 2^{31404142100242} is an apocalyptic number.

31404142100242 is a deficient number, since it is larger than the sum of its proper divisors (15759447682490).

31404142100242 is a wasteful number, since it uses less digits than its factorization.

31404142100242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19125544124.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 31404142100242 its reverse (24200124140413), we get a palindrome (55604266240655).

The spelling of 31404142100242 in words is "thirty-one trillion, four hundred four billion, one hundred forty-two million, one hundred thousand, two hundred forty-two".