1311012465 has 16 divisors (see below), whose sum is σ = 2397280128. Its totient is φ = 599319936.

The previous prime is 1311012463. The next prime is 1311012481. The reversal of 1311012465 is 5642101131.

It is a happy number.

It is not a de Polignac number, because 1311012465 - 2¹ = 1311012463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311012463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6242812 + ... + 6243021.

It is an arithmetic number, because the mean of its divisors is an integer number (149830008).

Almost surely, 2^1311012465 is an apocalyptic number.

1311012465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311012465 is a deficient number, since it is larger than the sum of its proper divisors (1086267663).

1311012465 is a wasteful number, since it uses less digits than its factorization.

1311012465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12485848.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1311012465 is about 36207.9061117872. The cubic root of 1311012465 is about 1094.4659976249.

Adding to 1311012465 its reverse (5642101131), we get a palindrome (6953113596).

The spelling of 1311012465 in words is "one billion, three hundred eleven million, twelve thousand, four hundred sixty-five".