31232022001 has 2 divisors, whose sum is σ = 31232022002. Its totient is φ = 31232022000.

The previous prime is 31232021983. The next prime is 31232022007. The reversal of 31232022001 is 10022023213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30493541376 + 738480625 = 174624^2 + 27175^2 .

It is an emirp because it is prime and its reverse (10022023213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31232022001 - 2⁹ = 31232021489 is a prime.

It is not a weakly prime, because it can be changed into another prime (31232022007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616011000 + 15616011001.

It is an arithmetic number, because the mean of its divisors is an integer number (15616011001).

Almost surely, 2^31232022001 is an apocalyptic number.

It is an amenable number.

31232022001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232022001 is an equidigital number, since it uses as much as digits as its factorization.

31232022001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31232022001 its reverse (10022023213), we get a palindrome (41254045214).

The spelling of 31232022001 in words is "thirty-one billion, two hundred thirty-two million, twenty-two thousand, one".