1311140331 has 8 divisors (see below), whose sum is σ = 1942430160. Its totient is φ = 874093536.

The previous prime is 1311140309. The next prime is 1311140357. The reversal of 1311140331 is 1330411131.

It is not a de Polignac number, because 1311140331 - 2¹³ = 1311132139 is a prime.

It is a super-2 number, since 2×1311140331² = 3438177935149579122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311142331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24280350 + ... + 24280403.

It is an arithmetic number, because the mean of its divisors is an integer number (242803770).

Almost surely, 2^1311140331 is an apocalyptic number.

1311140331 is a deficient number, since it is larger than the sum of its proper divisors (631289829).

1311140331 is an equidigital number, since it uses as much as digits as its factorization.

1311140331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48560762 (or 48560756 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1311140331 is about 36209.6717880734. The cubic root of 1311140331 is about 1094.5015783798.

Adding to 1311140331 its reverse (1330411131), we get a palindrome (2641551462).

The spelling of 1311140331 in words is "one billion, three hundred eleven million, one hundred forty thousand, three hundred thirty-one".