311053231 has 8 divisors (see below), whose sum is σ = 312938784. Its totient is φ = 309173760.

The previous prime is 311053187. The next prime is 311053243. The reversal of 311053231 is 132350113.

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 311053231 - 2⁷ = 311053103 is a prime.

It is a super-2 number, since 2×311053231² = 193508225031078722, 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 = 311053199 and 311053208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311053261) 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, 135711 + ... + 137983.

It is an arithmetic number, because the mean of its divisors is an integer number (39117348).

Almost surely, 2^311053231 is an apocalyptic number.

311053231 is a deficient number, since it is larger than the sum of its proper divisors (1885553).

311053231 is a wasteful number, since it uses less digits than its factorization.

311053231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 311053231 is about 17636.7012505173. The cubic root of 311053231 is about 677.5555477937. Note that the first 4 decimals are identical.

The spelling of 311053231 in words is "three hundred eleven million, fifty-three thousand, two hundred thirty-one".