31444001 has 2 divisors, whose sum is σ = 31444002. Its totient is φ = 31444000.

The previous prime is 31443977. The next prime is 31444003. The reversal of 31444001 is 10044413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21864976 + 9579025 = 4676^2 + 3095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31444001 is a prime.

Together with 31444003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31444003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15722000 + 15722001.

It is an arithmetic number, because the mean of its divisors is an integer number (15722001).

Almost surely, 2^31444001 is an apocalyptic number.

It is an amenable number.

31444001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31444001 is an equidigital number, since it uses as much as digits as its factorization.

31444001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31444001 is about 5607.4950735600. The cubic root of 31444001 is about 315.6307208191.

Adding to 31444001 its reverse (10044413), we get a palindrome (41488414).

The spelling of 31444001 in words is "thirty-one million, four hundred forty-four thousand, one".