20462131 has 4 divisors (see below), whose sum is σ = 20474392. Its totient is φ = 20449872.

The previous prime is 20462093. The next prime is 20462137. The reversal of 20462131 is 13126402.

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 20462131 - 2⁷ = 20462003 is a prime.

It is a super-2 number, since 2×20462131² = 837397610122322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20462099 and 20462108.

It is not an unprimeable number, because it can be changed into a prime (20462137) 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, 3141 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (5118598).

Almost surely, 2^20462131 is an apocalyptic number.

20462131 is a deficient number, since it is larger than the sum of its proper divisors (12261).

20462131 is a wasteful number, since it uses less digits than its factorization.

20462131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12260.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20462131 is about 4523.5087045346. The cubic root of 20462131 is about 273.5165565433.

Adding to 20462131 its reverse (13126402), we get a palindrome (33588533).

The spelling of 20462131 in words is "twenty million, four hundred sixty-two thousand, one hundred thirty-one".