20313212133 has 8 divisors (see below), whose sum is σ = 27084952096. Its totient is φ = 13541806800.

The previous prime is 20313212123. The next prime is 20313212137. The reversal of 20313212133 is 33121231302.

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

It is not a de Polignac number, because 20313212133 - 2⁶ = 20313212069 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 (20313212137) 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, 156378 + ... + 255108.

It is an arithmetic number, because the mean of its divisors is an integer number (3385619012).

Almost surely, 2^20313212133 is an apocalyptic number.

It is an amenable number.

20313212133 is a deficient number, since it is larger than the sum of its proper divisors (6771739963).

20313212133 is an equidigital number, since it uses as much as digits as its factorization.

20313212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167315.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20313212133 its reverse (33121231302), we get a palindrome (53434443435).

The spelling of 20313212133 in words is "twenty billion, three hundred thirteen million, two hundred twelve thousand, one hundred thirty-three".