20110311331 has 8 divisors (see below), whose sum is σ = 21939899904. Its totient is φ = 18280952520.

The previous prime is 20110311329. The next prime is 20110311343. The reversal of 20110311331 is 13311301102.

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 20110311331 - 2¹ = 20110311329 is a prime.

It is a super-2 number, since 2×20110311331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110311311) 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, 162066 + ... + 257848.

It is an arithmetic number, because the mean of its divisors is an integer number (2742487488).

Almost surely, 2^20110311331 is an apocalyptic number.

20110311331 is a deficient number, since it is larger than the sum of its proper divisors (1829588573).

20110311331 is a wasteful number, since it uses less digits than its factorization.

20110311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114881.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 20110311331 its reverse (13311301102), we get a palindrome (33421612433).

The spelling of 20110311331 in words is "twenty billion, one hundred ten million, three hundred eleven thousand, three hundred thirty-one".