311232001 has 2 divisors, whose sum is σ = 311232002. Its totient is φ = 311232000.

The previous prime is 311231939. The next prime is 311232013. The reversal of 311232001 is 100232113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289850625 + 21381376 = 17025^2 + 4624^2 .

It is a cyclic number.

It is not a de Polignac number, because 311232001 - 2⁷ = 311231873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (311232091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155616000 + 155616001.

It is an arithmetic number, because the mean of its divisors is an integer number (155616001).

Almost surely, 2^311232001 is an apocalyptic number.

It is an amenable number.

311232001 is a deficient number, since it is larger than the sum of its proper divisors (1).

311232001 is an equidigital number, since it uses as much as digits as its factorization.

311232001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 311232001 is about 17641.7686471623. The cubic root of 311232001 is about 677.6853255893.

Adding to 311232001 its reverse (100232113), we get a palindrome (411464114).

It can be divided in two parts, 31123 and 2001, that added together give a square (33124 = 182²).

The spelling of 311232001 in words is "three hundred eleven million, two hundred thirty-two thousand, one".