21313100310331 has 8 divisors (see below), whose sum is σ = 21324206638224. Its totient is φ = 21301994825760.

The previous prime is 21313100310277. The next prime is 21313100310347. The reversal of 21313100310331 is 13301300131312.

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 21313100310331 - 2⁹ = 21313100309819 is a prime.

It is a super-2 number, since 2×21313100310331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313100310391) 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, 53954961 + ... + 54348541.

It is an arithmetic number, because the mean of its divisors is an integer number (2665525829778).

Almost surely, 2^{21313100310331} is an apocalyptic number.

21313100310331 is a deficient number, since it is larger than the sum of its proper divisors (11106327893).

21313100310331 is a wasteful number, since it uses less digits than its factorization.

21313100310331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421661.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21313100310331 its reverse (13301300131312), we get a palindrome (34614400441643).

The spelling of 21313100310331 in words is "twenty-one trillion, three hundred thirteen billion, one hundred million, three hundred ten thousand, three hundred thirty-one".