201131313021023 has 64 divisors (see below), whose sum is σ = 267221420928000. Its totient is φ = 146556864829440.

The previous prime is 201131313021017. The next prime is 201131313021049. The reversal of 201131313021023 is 320120313131102.

It is a cyclic number.

It is not a de Polignac number, because 201131313021023 - 2⁸ = 201131313020767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201131313021023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131313027023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4294992773 + ... + 4295039601.

It is an arithmetic number, because the mean of its divisors is an integer number (4175334702000).

Almost surely, 2^{201131313021023} is an apocalyptic number.

201131313021023 is a deficient number, since it is larger than the sum of its proper divisors (66090107906977).

201131313021023 is a wasteful number, since it uses less digits than its factorization.

201131313021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67920.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 201131313021023 its reverse (320120313131102), we get a palindrome (521251626152125).

The spelling of 201131313021023 in words is "two hundred one trillion, one hundred thirty-one billion, three hundred thirteen million, twenty-one thousand, twenty-three".