20102042431 has 8 divisors (see below), whose sum is σ = 20202801840. Its totient is φ = 20001390528.

The previous prime is 20102042399. The next prime is 20102042461. The reversal of 20102042431 is 13424020102.

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

It is a cyclic number.

It is not a de Polignac number, because 20102042431 - 2⁵ = 20102042399 is a prime.

It is a super-2 number, since 2×20102042431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102042399 and 20102042408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102042461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362035 + ... + 413851.

It is an arithmetic number, because the mean of its divisors is an integer number (2525350230).

Almost surely, 2^20102042431 is an apocalyptic number.

20102042431 is a deficient number, since it is larger than the sum of its proper divisors (100759409).

20102042431 is a wasteful number, since it uses less digits than its factorization.

20102042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53753.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20102042431 its reverse (13424020102), we get a palindrome (33526062533).

The spelling of 20102042431 in words is "twenty billion, one hundred two million, forty-two thousand, four hundred thirty-one".