311102001 has 12 divisors (see below), whose sum is σ = 513565312. Its totient is φ = 177772536.

The previous prime is 311101993. The next prime is 311102009. The reversal of 311102001 is 100201113.

It is an interprime number because it is at equal distance from previous prime (311101993) and next prime (311102009).

It is not a de Polignac number, because 311102001 - 2³ = 311101993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311102009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2469001 + ... + 2469126.

Almost surely, 2^311102001 is an apocalyptic number.

It is an amenable number.

311102001 is a deficient number, since it is larger than the sum of its proper divisors (202463311).

311102001 is a wasteful number, since it uses less digits than its factorization.

311102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938140 (or 4938137 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 311102001 is about 17638.0838244975. The cubic root of 311102001 is about 677.5909572284.

Adding to 311102001 its reverse (100201113), we get a palindrome (411303114).

The spelling of 311102001 in words is "three hundred eleven million, one hundred two thousand, one".