6311990 has 32 divisors (see below), whose sum is σ = 12096000. Its totient is φ = 2364768.

The previous prime is 6311989. The next prime is 6312017. The reversal of 6311990 is 991136.

6311990 = T₃₁₆ + T₃₁₇ + ... + T₄₁₀.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26291 + ... + 26529.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^6311990 is an apocalyptic number.

6311990 is a deficient number, since it is larger than the sum of its proper divisors (5784010).

6311990 is a wasteful number, since it uses less digits than its factorization.

6311990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 6311990 is about 2512.3674094368. The cubic root of 6311990 is about 184.8085675019.

The spelling of 6311990 in words is "six million, three hundred eleven thousand, nine hundred ninety".