1312103211 has 8 divisors (see below), whose sum is σ = 1753300944. Its totient is φ = 872820480.

The previous prime is 1312103201. The next prime is 1312103249. The reversal of 1312103211 is 1123012131.

It is a happy number.

1312103211 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1312103211 - 2⁶ = 1312103147 is a prime.

It is a super-2 number, since 2×1312103211² = 3443229672633021042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312103201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477150 + ... + 479891.

It is an arithmetic number, because the mean of its divisors is an integer number (219162618).

Almost surely, 2^1312103211 is an apocalyptic number.

1312103211 is a deficient number, since it is larger than the sum of its proper divisors (441197733).

1312103211 is an equidigital number, since it uses as much as digits as its factorization.

1312103211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957501.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1312103211 is about 36222.9652430609. The cubic root of 1312103211 is about 1094.7694408345.

Adding to 1312103211 its reverse (1123012131), we get a palindrome (2435115342).

It can be divided in two parts, 131210 and 3211, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 1312103211 in words is "one billion, three hundred twelve million, one hundred three thousand, two hundred eleven".