20782874031 has 8 divisors (see below), whose sum is σ = 27749041920. Its totient is φ = 13835977752.

The previous prime is 20782873999. The next prime is 20782874081. The reversal of 20782874031 is 13047828702.

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

It is not a de Polignac number, because 20782874031 - 2⁵ = 20782873999 is a prime.

It is a super-2 number, since 2×20782874031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20782874081) 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, 4815385 + ... + 4819698.

It is an arithmetic number, because the mean of its divisors is an integer number (3468630240).

Almost surely, 2^20782874031 is an apocalyptic number.

20782874031 is a deficient number, since it is larger than the sum of its proper divisors (6966167889).

20782874031 is an equidigital number, since it uses as much as digits as its factorization.

20782874031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635805.

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 20782874031 in words is "twenty billion, seven hundred eighty-two million, eight hundred seventy-four thousand, thirty-one".