311252005 has 8 divisors (see below), whose sum is σ = 373636224. Its totient is φ = 248912400.

The previous prime is 311251961. The next prime is 311252063. The reversal of 311252005 is 500252113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311252005 - 2⁷ = 311251877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6840 + ... + 25870.

It is an arithmetic number, because the mean of its divisors is an integer number (46704528).

Almost surely, 2^311252005 is an apocalyptic number.

It is an amenable number.

311252005 is a deficient number, since it is larger than the sum of its proper divisors (62384219).

311252005 is a wasteful number, since it uses less digits than its factorization.

311252005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22307.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 311252005 is about 17642.3355880110. The cubic root of 311252005 is about 677.6998443692.

The spelling of 311252005 in words is "three hundred eleven million, two hundred fifty-two thousand, five".