20311203310 has 16 divisors (see below), whose sum is σ = 36901851696. Its totient is φ = 8048551168.

The previous prime is 20311203299. The next prime is 20311203397. The reversal of 20311203310 is 1330211302.

It is a super-2 number, since 2×20311203310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9490147 + ... + 9492286.

It is an arithmetic number, because the mean of its divisors is an integer number (2306365731).

Almost surely, 2^20311203310 is an apocalyptic number.

20311203310 is a deficient number, since it is larger than the sum of its proper divisors (16590648386).

20311203310 is a wasteful number, since it uses less digits than its factorization.

20311203310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18982547.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20311203310 its reverse (1330211302), we get a palindrome (21641414612).

The spelling of 20311203310 in words is "twenty billion, three hundred eleven million, two hundred three thousand, three hundred ten".