21423430341 has 16 divisors (see below), whose sum is σ = 31786603200. Its totient is φ = 14260602384.

The previous prime is 21423430319. The next prime is 21423430363. The reversal of 21423430341 is 14303432412.

It is an interprime number because it is at equal distance from previous prime (21423430319) and next prime (21423430363).

It is not a de Polignac number, because 21423430341 - 2⁵ = 21423430309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21423430381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584226 + ... + 619811.

It is an arithmetic number, because the mean of its divisors is an integer number (1986662700).

Almost surely, 2^21423430341 is an apocalyptic number.

It is an amenable number.

21423430341 is a deficient number, since it is larger than the sum of its proper divisors (10363172859).

21423430341 is a wasteful number, since it uses less digits than its factorization.

21423430341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204705 (or 1204699 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21423430341 its reverse (14303432412), we get a palindrome (35726862753).

The spelling of 21423430341 in words is "twenty-one billion, four hundred twenty-three million, four hundred thirty thousand, three hundred forty-one".