20047331 has 8 divisors (see below), whose sum is σ = 20680704. Its totient is φ = 19421640.

The previous prime is 20047327. The next prime is 20047361. The reversal of 20047331 is 13374002.

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 20047331 - 2² = 20047327 is a prime.

It is a super-2 number, since 2×20047331² = 803790960447122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20047361) 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, 3626 + ... + 7296.

It is an arithmetic number, because the mean of its divisors is an integer number (2585088).

Almost surely, 2^20047331 is an apocalyptic number.

20047331 is a deficient number, since it is larger than the sum of its proper divisors (633373).

20047331 is a wasteful number, since it uses less digits than its factorization.

20047331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20047331 is about 4477.4245945633. The cubic root of 20047331 is about 271.6557198010.

The spelling of 20047331 in words is "twenty million, forty-seven thousand, three hundred thirty-one".