31321232201 has 8 divisors (see below), whose sum is σ = 35836056960. Its totient is φ = 26816498208.

The previous prime is 31321232153. The next prime is 31321232209. The reversal of 31321232201 is 10223212313.

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-31321232201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31321232209) 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, 2516036 + ... + 2528453.

It is an arithmetic number, because the mean of its divisors is an integer number (4479507120).

Almost surely, 2^31321232201 is an apocalyptic number.

It is an amenable number.

31321232201 is a deficient number, since it is larger than the sum of its proper divisors (4514824759).

31321232201 is an equidigital number, since it uses as much as digits as its factorization.

31321232201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045383.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31321232201 its reverse (10223212313), we get a palindrome (41544444514).

The spelling of 31321232201 in words is "thirty-one billion, three hundred twenty-one million, two hundred thirty-two thousand, two hundred one".