20301431 has 4 divisors (see below), whose sum is σ = 20491272. Its totient is φ = 20111592.

The previous prime is 20301409. The next prime is 20301517. The reversal of 20301431 is 13410302.

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 20301431 - 2¹⁸ = 20039287 is a prime.

It is a super-2 number, since 2×20301431² = 824296201295522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301401) 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, 94760 + ... + 94973.

It is an arithmetic number, because the mean of its divisors is an integer number (5122818).

Almost surely, 2^20301431 is an apocalyptic number.

20301431 is a deficient number, since it is larger than the sum of its proper divisors (189841).

20301431 is a wasteful number, since it uses less digits than its factorization.

20301431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189840.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20301431 is about 4505.7109316955. The cubic root of 20301431 is about 272.7986502099.

Adding to 20301431 its reverse (13410302), we get a palindrome (33711733).

The spelling of 20301431 in words is "twenty million, three hundred one thousand, four hundred thirty-one".