311040019 has 8 divisors (see below), whose sum is σ = 329752448. Its totient is φ = 292870080.

The previous prime is 311040011. The next prime is 311040029. The reversal of 311040019 is 910040113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 311040019 - 2³ = 311040011 is a prime.

It is a super-2 number, since 2×311040019² = 193491786839040722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311039978 and 311040005.

It is not an unprimeable number, because it can be changed into a prime (311040011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134442 + ... + 136735.

It is an arithmetic number, because the mean of its divisors is an integer number (41219056).

Almost surely, 2^311040019 is an apocalyptic number.

311040019 is a deficient number, since it is larger than the sum of its proper divisors (18712429).

311040019 is a wasteful number, since it uses less digits than its factorization.

311040019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271245.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 311040019 is about 17636.3266866998. The cubic root of 311040019 is about 677.5459545904.

The spelling of 311040019 in words is "three hundred eleven million, forty thousand, nineteen".