31424242213242 has 12 divisors (see below), whose sum is σ = 68085858128730. Its totient is φ = 10474747404408.

The previous prime is 31424242213079. The next prime is 31424242213253. The reversal of 31424242213242 is 24231224242413.

31424242213242 is a `hidden beast` number, since 3 + 1 + 4 + 2 + 424 + 221 + 3 + 2 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30092454664281 + 1331787548961 = 5485659^2 + 1154031^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31424242213197 and 31424242213206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 872895617017 + ... + 872895617052.

Almost surely, 2^{31424242213242} is an apocalyptic number.

31424242213242 is an abundant number, since it is smaller than the sum of its proper divisors (36661615915488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31424242213242 is a wasteful number, since it uses less digits than its factorization.

31424242213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745791234077 (or 1745791234074 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

Adding to 31424242213242 its reverse (24231224242413), we get a palindrome (55655466455655).

The spelling of 31424242213242 in words is "thirty-one trillion, four hundred twenty-four billion, two hundred forty-two million, two hundred thirteen thousand, two hundred forty-two".