311848231 has 2 divisors, whose sum is σ = 311848232. Its totient is φ = 311848230.

The previous prime is 311848219. The next prime is 311848241. The reversal of 311848231 is 132848113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311848231 - 2¹⁵ = 311815463 is a prime.

It is a super-2 number, since 2×311848231² = 194498638355658722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311848193 and 311848202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311848241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155924115 + 155924116.

It is an arithmetic number, because the mean of its divisors is an integer number (155924116).

Almost surely, 2^311848231 is an apocalyptic number.

311848231 is a deficient number, since it is larger than the sum of its proper divisors (1).

311848231 is an equidigital number, since it uses as much as digits as its factorization.

311848231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 311848231 is about 17659.2250962493. The cubic root of 311848231 is about 678.1322962426.

The spelling of 311848231 in words is "three hundred eleven million, eight hundred forty-eight thousand, two hundred thirty-one".