201431240023220 has 24 divisors (see below), whose sum is σ = 423005873913000. Its totient is φ = 80572444606592.

The previous prime is 201431240023127. The next prime is 201431240023267. The reversal of 201431240023220 is 22320042134102.

201431240023220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37495072315684 + 163936167707536 = 6123322^2 + 12803756^2 .

It is a super-2 number, since 2×201431240023220² (a number of 29 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 201431240023220.

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, 52403606 + ... + 56115954.

It is an arithmetic number, because the mean of its divisors is an integer number (17625244746375).

Almost surely, 2^{201431240023220} is an apocalyptic number.

201431240023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201431240023220 is an abundant number, since it is smaller than the sum of its proper divisors (221574633889780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201431240023220 is a wasteful number, since it uses less digits than its factorization.

201431240023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6425347 (or 6425345 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 201431240023220 its reverse (22320042134102), we get a palindrome (223751282157322).

The spelling of 201431240023220 in words is "two hundred one trillion, four hundred thirty-one billion, two hundred forty million, twenty-three thousand, two hundred twenty".