20313021011 has 16 divisors (see below), whose sum is σ = 21506808960. Its totient is φ = 19132021440.

The previous prime is 20313020951. The next prime is 20313021031. The reversal of 20313021011 is 11012031302.

It is a cyclic number.

It is not a de Polignac number, because 20313021011 - 2⁶ = 20313020947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313021031) 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, 2489240 + ... + 2497386.

It is an arithmetic number, because the mean of its divisors is an integer number (1344175560).

Almost surely, 2^20313021011 is an apocalyptic number.

20313021011 is a deficient number, since it is larger than the sum of its proper divisors (1193787949).

20313021011 is a wasteful number, since it uses less digits than its factorization.

20313021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8914.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20313021011 its reverse (11012031302), we get a palindrome (31325052313).

The spelling of 20313021011 in words is "twenty billion, three hundred thirteen million, twenty-one thousand, eleven".