201431423113 has 4 divisors (see below), whose sum is σ = 203694697620. Its totient is φ = 199168148608.

The previous prime is 201431423051. The next prime is 201431423119. The reversal of 201431423113 is 311324134102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99295572544 + 102135850569 = 315112^2 + 319587^2 .

It is a cyclic number.

It is not a de Polignac number, because 201431423113 - 2⁹ = 201431422601 is a prime.

It is a super-2 number, since 2×201431423113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201431423119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131637120 + ... + 1131637297.

It is an arithmetic number, because the mean of its divisors is an integer number (50923674405).

Almost surely, 2^201431423113 is an apocalyptic number.

It is an amenable number.

201431423113 is a deficient number, since it is larger than the sum of its proper divisors (2263274507).

201431423113 is an equidigital number, since it uses as much as digits as its factorization.

201431423113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263274506.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 201431423113 its reverse (311324134102), we get a palindrome (512755557215).

The spelling of 201431423113 in words is "two hundred one billion, four hundred thirty-one million, four hundred twenty-three thousand, one hundred thirteen".