21430433432031 has 64 divisors (see below), whose sum is σ = 31703950333440. Its totient is φ = 12796289925120.

The previous prime is 21430433432011. The next prime is 21430433432113. The reversal of 21430433432031 is 13023433403412.

It is a happy number.

It is not a de Polignac number, because 21430433432031 - 2²⁹ = 21429896561119 is a prime.

It is a super-2 number, since 2×21430433432031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21430433431983 and 21430433432001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430433432011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40872055 + ... + 41393063.

It is an arithmetic number, because the mean of its divisors is an integer number (495374223960).

Almost surely, 2^{21430433432031} is an apocalyptic number.

21430433432031 is a deficient number, since it is larger than the sum of its proper divisors (10273516901409).

21430433432031 is a wasteful number, since it uses less digits than its factorization.

21430433432031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521336.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 21430433432031 its reverse (13023433403412), we get a palindrome (34453866835443).

The spelling of 21430433432031 in words is "twenty-one trillion, four hundred thirty billion, four hundred thirty-three million, four hundred thirty-two thousand, thirty-one".