21313353151 has 8 divisors (see below), whose sum is σ = 23158822400. Its totient is φ = 19540255320.

The previous prime is 21313353143. The next prime is 21313353157. The reversal of 21313353151 is 15135331312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21313353151 - 2³ = 21313353143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313353157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18092241 + ... + 18093418.

It is an arithmetic number, because the mean of its divisors is an integer number (2894852800).

Almost surely, 2^21313353151 is an apocalyptic number.

21313353151 is a deficient number, since it is larger than the sum of its proper divisors (1845469249).

21313353151 is a wasteful number, since it uses less digits than its factorization.

21313353151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36185709.

The product of its digits is 4050, while the sum is 28.

Adding to 21313353151 its reverse (15135331312), we get a palindrome (36448684463).

The spelling of 21313353151 in words is "twenty-one billion, three hundred thirteen million, three hundred fifty-three thousand, one hundred fifty-one".