21414412431 has 12 divisors (see below), whose sum is σ = 31104735480. Its totient is φ = 14196518160.

The previous prime is 21414412429. The next prime is 21414412433. The reversal of 21414412431 is 13421441412.

21414412431 is a `hidden beast` number, since 2 + 1 + 414 + 4 + 1 + 243 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (21414412429) and next prime (21414412433).

It is not a de Polignac number, because 21414412431 - 2¹ = 21414412429 is a prime.

It is a super-2 number, since 2×21414412431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21414412395 and 21414412404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21414412433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6644700 + ... + 6647921.

It is an arithmetic number, because the mean of its divisors is an integer number (2592061290).

Almost surely, 2^21414412431 is an apocalyptic number.

21414412431 is a deficient number, since it is larger than the sum of its proper divisors (9690323049).

21414412431 is a wasteful number, since it uses less digits than its factorization.

21414412431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13292806 (or 13292803 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 21414412431 its reverse (13421441412), we get a palindrome (34835853843).

The spelling of 21414412431 in words is "twenty-one billion, four hundred fourteen million, four hundred twelve thousand, four hundred thirty-one".