20213333431042 has 4 divisors (see below), whose sum is σ = 30320000146566. Its totient is φ = 10106666715520.

The previous prime is 20213333431033. The next prime is 20213333431061. The reversal of 20213333431042 is 24013433331202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17798855639161 + 2414477791881 = 4218869^2 + 1553859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20213333430995 and 20213333431013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053333357759 + ... + 5053333357762.

Almost surely, 2^{20213333431042} is an apocalyptic number.

20213333431042 is a deficient number, since it is larger than the sum of its proper divisors (10106666715524).

20213333431042 is a wasteful number, since it uses less digits than its factorization.

20213333431042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106666715523.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 20213333431042 its reverse (24013433331202), we get a palindrome (44226766762244).

The spelling of 20213333431042 in words is "twenty trillion, two hundred thirteen billion, three hundred thirty-three million, four hundred thirty-one thousand, forty-two".