20341531 has 8 divisors (see below), whose sum is σ = 23335424. Its totient is φ = 17369640.

The previous prime is 20341481. The next prime is 20341561. The reversal of 20341531 is 13514302.

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 20341531 - 2⁹ = 20341019 is a prime.

It is a super-2 number, since 2×20341531² = 827555766847922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20341499 and 20341508.

It is not an unprimeable number, because it can be changed into a prime (20341561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3465 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (2916928).

Almost surely, 2^20341531 is an apocalyptic number.

20341531 is a deficient number, since it is larger than the sum of its proper divisors (2993893).

20341531 is a wasteful number, since it uses less digits than its factorization.

20341531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20341531 is about 4510.1586446599. The cubic root of 20341531 is about 272.9781454594.

Adding to 20341531 its reverse (13514302), we get a palindrome (33855833).

It can be divided in two parts, 20 and 341531, that added together give a triangular number (341551 = T₈₂₆).

The spelling of 20341531 in words is "twenty million, three hundred forty-one thousand, five hundred thirty-one".