3995311 has 6 divisors (see below), whose sum is σ = 4135712. Its totient is φ = 3855660.

The previous prime is 3995281. The next prime is 3995347. The reversal of 3995311 is 1135993.

It is not a de Polignac number, because 3995311 - 2⁵ = 3995279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10950 + ... + 11308.

Almost surely, 2^3995311 is an apocalyptic number.

3995311 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3995311 is a deficient number, since it is larger than the sum of its proper divisors (140401).

3995311 is an frugal number, since it uses more digits than its factorization.

3995311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 390 counting only the distinct ones).

The product of its digits is 3645, while the sum is 31.

The square root of 3995311 is about 1998.8274062560. The cubic root of 3995311 is about 158.6780532476.

Multiplying 3995311 by its sum of digits (31), we get a square (123854641 = 11129²).

3995311 divided by its sum of digits (31) gives a square (128881 = 359²).

The spelling of 3995311 in words is "three million, nine hundred ninety-five thousand, three hundred eleven".