201131310621 has 8 divisors (see below), whose sum is σ = 268185082464. Its totient is φ = 134082539600.

The previous prime is 201131310587. The next prime is 201131310659. The reversal of 201131310621 is 126013131102.

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 201131310621 - 2⁹ = 201131310109 is a prime.

It is a super-2 number, since 2×201131310621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131310671) 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, 1155330 + ... + 1317971.

It is an arithmetic number, because the mean of its divisors is an integer number (33523135308).

Almost surely, 2^201131310621 is an apocalyptic number.

It is an amenable number.

201131310621 is a deficient number, since it is larger than the sum of its proper divisors (67053771843).

201131310621 is a wasteful number, since it uses less digits than its factorization.

201131310621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500411.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 201131310621 its reverse (126013131102), we get a palindrome (327144441723).

The spelling of 201131310621 in words is "two hundred one billion, one hundred thirty-one million, three hundred ten thousand, six hundred twenty-one".