201131213023 has 8 divisors (see below), whose sum is σ = 228002994800. Its totient is φ = 175888024128.

The previous prime is 201131213009. The next prime is 201131213051. The reversal of 201131213023 is 320312131102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201131213023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131211023) 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, 407147958 + ... + 407148451.

It is an arithmetic number, because the mean of its divisors is an integer number (28500374350).

Almost surely, 2^201131213023 is an apocalyptic number.

201131213023 is a deficient number, since it is larger than the sum of its proper divisors (26871781777).

201131213023 is a wasteful number, since it uses less digits than its factorization.

201131213023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814296441.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201131213023 its reverse (320312131102), we get a palindrome (521443344125).

The spelling of 201131213023 in words is "two hundred one billion, one hundred thirty-one million, two hundred thirteen thousand, twenty-three".