1311031214 has 32 divisors (see below), whose sum is σ = 2058338304. Its totient is φ = 625716000.

The previous prime is 1311031213. The next prime is 1311031219. The reversal of 1311031214 is 4121301131.

It is a junction number, because it is equal to n+sod(n) for n = 1311031192 and 1311031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311031213) 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, 1745339 + ... + 1746089.

It is an arithmetic number, because the mean of its divisors is an integer number (64323072).

Almost surely, 2^1311031214 is an apocalyptic number.

1311031214 is a deficient number, since it is larger than the sum of its proper divisors (747307090).

1311031214 is a wasteful number, since it uses less digits than its factorization.

1311031214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1311031214 is about 36208.1650184043. The cubic root of 1311031214 is about 1094.4712149781.

Adding to 1311031214 its reverse (4121301131), we get a palindrome (5432332345).

The spelling of 1311031214 in words is "one billion, three hundred eleven million, thirty-one thousand, two hundred fourteen".