20120201331 has 8 divisors (see below), whose sum is σ = 26860098960. Its totient is φ = 13396885632.

The previous prime is 20120201323. The next prime is 20120201341. The reversal of 20120201331 is 13310202102.

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

It is not a de Polignac number, because 20120201331 - 2³ = 20120201323 is a prime.

It is a super-2 number, since 2×20120201331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20120201331.

It is not an unprimeable number, because it can be changed into a prime (20120201341) 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, 4142650 + ... + 4147503.

It is an arithmetic number, because the mean of its divisors is an integer number (3357512370).

Almost surely, 2^20120201331 is an apocalyptic number.

20120201331 is a deficient number, since it is larger than the sum of its proper divisors (6739897629).

20120201331 is an equidigital number, since it uses as much as digits as its factorization.

20120201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8290965.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20120201331 its reverse (13310202102), we get a palindrome (33430403433).

The spelling of 20120201331 in words is "twenty billion, one hundred twenty million, two hundred one thousand, three hundred thirty-one".