201001431023 has 4 divisors (see below), whose sum is σ = 201020134368. Its totient is φ = 200982727680.

The previous prime is 201001430989. The next prime is 201001431031. The reversal of 201001431023 is 320134100102.

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

It is a cyclic number.

It is not a de Polignac number, because 201001431023 - 2¹⁴ = 201001414639 is a prime.

It is a super-3 number, since 3×201001431023³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201001430992 and 201001431010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201431023) 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, 9335543 + ... + 9357048.

It is an arithmetic number, because the mean of its divisors is an integer number (50255033592).

Almost surely, 2^201001431023 is an apocalyptic number.

201001431023 is a deficient number, since it is larger than the sum of its proper divisors (18703345).

201001431023 is a wasteful number, since it uses less digits than its factorization.

201001431023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703344.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201001431023 its reverse (320134100102), we get a palindrome (521135531125).

The spelling of 201001431023 in words is "two hundred one billion, one million, four hundred thirty-one thousand, twenty-three".