21430000432131 has 4 divisors (see below), whose sum is σ = 28573333909512. Its totient is φ = 14286666954752.

The previous prime is 21430000432109. The next prime is 21430000432133. The reversal of 21430000432131 is 13123400003412.

It is a happy number.

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 21430000432131 - 2⁶ = 21430000432067 is a prime.

It is a super-2 number, since 2×21430000432131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21430000432133) 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, 3571666738686 + ... + 3571666738691.

It is an arithmetic number, because the mean of its divisors is an integer number (7143333477378).

Almost surely, 2^{21430000432131} is an apocalyptic number.

21430000432131 is a deficient number, since it is larger than the sum of its proper divisors (7143333477381).

21430000432131 is an equidigital number, since it uses as much as digits as its factorization.

21430000432131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143333477380.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21430000432131 its reverse (13123400003412), we get a palindrome (34553400435543).

The spelling of 21430000432131 in words is "twenty-one trillion, four hundred thirty billion, four hundred thirty-two thousand, one hundred thirty-one".