20731483 has 8 divisors (see below), whose sum is σ = 22025952. Its totient is φ = 19445376.

The previous prime is 20731457. The next prime is 20731499. The reversal of 20731483 is 38413702.

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 20731483 - 2²¹ = 18634331 is a prime.

It is a super-3 number, since 3×20731483³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20731423) 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, 3466 + ... + 7312.

It is an arithmetic number, because the mean of its divisors is an integer number (2753244).

Almost surely, 2^20731483 is an apocalyptic number.

20731483 is a deficient number, since it is larger than the sum of its proper divisors (1294469).

20731483 is a wasteful number, since it uses less digits than its factorization.

20731483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20731483 is about 4553.1838311230. The cubic root of 20731483 is about 274.7114681753.

The spelling of 20731483 in words is "twenty million, seven hundred thirty-one thousand, four hundred eighty-three".