201331230209945 has 24 divisors (see below), whose sum is σ = 265785895867968. Its totient is φ = 146296811497760.

The previous prime is 201331230209933. The next prime is 201331230209981. The reversal of 201331230209945 is 549902032133102.

It is not a de Polignac number, because 201331230209945 - 2⁶ = 201331230209881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201331230209896 and 201331230209905.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142365557 + ... + 143772786.

It is an arithmetic number, because the mean of its divisors is an integer number (11074412327832).

Almost surely, 2^{201331230209945} is an apocalyptic number.

It is an amenable number.

201331230209945 is a deficient number, since it is larger than the sum of its proper divisors (64454665658023).

201331230209945 is a wasteful number, since it uses less digits than its factorization.

201331230209945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286139533 (or 286139522 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 201331230209945 in words is "two hundred one trillion, three hundred thirty-one billion, two hundred thirty million, two hundred nine thousand, nine hundred forty-five".