20141531 has 4 divisors (see below), whose sum is σ = 20155632. Its totient is φ = 20127432.

The previous prime is 20141509. The next prime is 20141543. The reversal of 20141531 is 13514102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20141531 - 2⁶ = 20141467 is a prime.

It is a super-2 number, since 2×20141531² = 811362542047922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20141591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (5038908).

Almost surely, 2^20141531 is an apocalyptic number.

20141531 is a deficient number, since it is larger than the sum of its proper divisors (14101).

20141531 is a wasteful number, since it uses less digits than its factorization.

20141531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14100.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20141531 is about 4487.9317062540. The cubic root of 20141531 is about 272.0805476199.

Adding to 20141531 its reverse (13514102), we get a palindrome (33655633).

The spelling of 20141531 in words is "twenty million, one hundred forty-one thousand, five hundred thirty-one".