201531223001 has 8 divisors (see below), whose sum is σ = 213740885184. Its totient is φ = 189608847120.

The previous prime is 201531222853. The next prime is 201531223057. The reversal of 201531223001 is 100322135102.

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

It is a cyclic number.

It is not a de Polignac number, because 201531223001 - 2¹⁰ = 201531221977 is a prime.

It is a super-2 number, since 2×201531223001² (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 (201531223301) 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, 71820131 + ... + 71822936.

It is an arithmetic number, because the mean of its divisors is an integer number (26717610648).

Almost surely, 2^201531223001 is an apocalyptic number.

It is an amenable number.

201531223001 is a deficient number, since it is larger than the sum of its proper divisors (12209662183).

201531223001 is a wasteful number, since it uses less digits than its factorization.

201531223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143643151.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 201531223001 its reverse (100322135102), we get a palindrome (301853358103).

The spelling of 201531223001 in words is "two hundred one billion, five hundred thirty-one million, two hundred twenty-three thousand, one".