201231310032 has 30 divisors (see below), whose sum is σ = 563168180562. Its totient is φ = 67077103296.

The previous prime is 201231309997. The next prime is 201231310057. The reversal of 201231310032 is 230013132102.

It can be written as a sum of positive squares in only one way, i.e., 140733020736 + 60498289296 = 375144^2 + 245964^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201231309987 and 201231310014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 698719683 + ... + 698719970.

Almost surely, 2^201231310032 is an apocalyptic number.

It is an amenable number.

201231310032 is an abundant number, since it is smaller than the sum of its proper divisors (361936870530).

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

201231310032 is a wasteful number, since it uses less digits than its factorization.

201231310032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397439667 (or 1397439658 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 201231310032 its reverse (230013132102), we get a palindrome (431244442134).

The spelling of 201231310032 in words is "two hundred one billion, two hundred thirty-one million, three hundred ten thousand, thirty-two".