20042428831 has 8 divisors (see below), whose sum is σ = 20156992128. Its totient is φ = 19927908000.

The previous prime is 20042428753. The next prime is 20042428841. The reversal of 20042428831 is 13882424002.

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 20042428831 - 2⁹ = 20042428319 is a prime.

It is a super-2 number, since 2×20042428831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042428841) 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, 1853661 + ... + 1864441.

It is an arithmetic number, because the mean of its divisors is an integer number (2519624016).

Almost surely, 2^20042428831 is an apocalyptic number.

20042428831 is a deficient number, since it is larger than the sum of its proper divisors (114563297).

20042428831 is a wasteful number, since it uses less digits than its factorization.

20042428831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21233.

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 20042428831 in words is "twenty billion, forty-two million, four hundred twenty-eight thousand, eight hundred thirty-one".