231322211332201 has 4 divisors (see below), whose sum is σ = 252351503271504. Its totient is φ = 210292919392900.

The previous prime is 231322211332187. The next prime is 231322211332237. The reversal of 231322211332201 is 102233112223132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231322211332201 - 2³³ = 231313621397609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231322211332201.

It is not an unprimeable number, because it can be changed into a prime (231322211332241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10514645969635 + ... + 10514645969656.

It is an arithmetic number, because the mean of its divisors is an integer number (63087875817876).

Almost surely, 2^{231322211332201} is an apocalyptic number.

It is an amenable number.

231322211332201 is a deficient number, since it is larger than the sum of its proper divisors (21029291939303).

231322211332201 is a wasteful number, since it uses less digits than its factorization.

231322211332201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21029291939302.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 231322211332201 its reverse (102233112223132), we get a palindrome (333555323555333).

The spelling of 231322211332201 in words is "two hundred thirty-one trillion, three hundred twenty-two billion, two hundred eleven million, three hundred thirty-two thousand, two hundred one".