1012440311 has 4 divisors (see below), whose sum is σ = 1012589952. Its totient is φ = 1012290672.

The previous prime is 1012440281. The next prime is 1012440323. The reversal of 1012440311 is 1130442101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012440311 - 2¹⁰ = 1012439287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012440311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012446311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64166 + ... + 78371.

It is an arithmetic number, because the mean of its divisors is an integer number (253147488).

Almost surely, 2^1012440311 is an apocalyptic number.

1012440311 is a deficient number, since it is larger than the sum of its proper divisors (149641).

1012440311 is an equidigital number, since it uses as much as digits as its factorization.

1012440311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149640.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1012440311 is about 31818.8672174231. The cubic root of 1012440311 is about 1004.1296924968.

Adding to 1012440311 its reverse (1130442101), we get a palindrome (2142882412).

The spelling of 1012440311 in words is "one billion, twelve million, four hundred forty thousand, three hundred eleven".