20031411 has 16 divisors (see below), whose sum is σ = 27568800. Its totient is φ = 12929280.

The previous prime is 20031409. The next prime is 20031439. The reversal of 20031411 is 11413002.

It is a happy number.

It is not a de Polignac number, because 20031411 - 2¹ = 20031409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20031461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17781 + ... + 18873.

It is an arithmetic number, because the mean of its divisors is an integer number (1723050).

Almost surely, 2^20031411 is an apocalyptic number.

20031411 is a deficient number, since it is larger than the sum of its proper divisors (7537389).

20031411 is a wasteful number, since it uses less digits than its factorization.

20031411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20031411 is about 4475.6464337568. The cubic root of 20031411 is about 271.5837916166.

Adding to 20031411 its reverse (11413002), we get a palindrome (31444413).

The spelling of 20031411 in words is "twenty million, thirty-one thousand, four hundred eleven".