1012311 has 8 divisors (see below), whose sum is σ = 1499760. Its totient is φ = 674856.

The previous prime is 1012307. The next prime is 1012321. The reversal of 1012311 is 1132101.

It is not a de Polignac number, because 1012311 - 2² = 1012307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1012293 and 1012302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18720 + ... + 18773.

It is an arithmetic number, because the mean of its divisors is an integer number (187470).

2^1012311 is an apocalyptic number.

1012311 is a deficient number, since it is larger than the sum of its proper divisors (487449).

1012311 is an equidigital number, since it uses as much as digits as its factorization.

1012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37502 (or 37496 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1012311 is about 1006.1366706367. The cubic root of 1012311 is about 100.4086940827.

Adding to 1012311 its reverse (1132101), we get a palindrome (2144412).

It can be divided in two parts, 10 and 12311, that added together give a palindrome (12321).

The spelling of 1012311 in words is "one million, twelve thousand, three hundred eleven".