1214312131 has 4 divisors (see below), whose sum is σ = 1242551992. Its totient is φ = 1186072272.

The previous prime is 1214312119. The next prime is 1214312153. The reversal of 1214312131 is 1312134121.

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 1214312131 - 2⁹ = 1214311619 is a prime.

It is a super-3 number, since 3×1214312131³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1214312099 and 1214312108.

It is not an unprimeable number, because it can be changed into a prime (1214312101) 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, 14119866 + ... + 14119951.

It is an arithmetic number, because the mean of its divisors is an integer number (310637998).

Almost surely, 2^1214312131 is an apocalyptic number.

1214312131 is a deficient number, since it is larger than the sum of its proper divisors (28239861).

1214312131 is an equidigital number, since it uses as much as digits as its factorization.

1214312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28239860.

The product of its digits is 144, while the sum is 19.

The square root of 1214312131 is about 34846.9816626921. The cubic root of 1214312131 is about 1066.8665807699.

Adding to 1214312131 its reverse (1312134121), we get a palindrome (2526446252).

The spelling of 1214312131 in words is "one billion, two hundred fourteen million, three hundred twelve thousand, one hundred thirty-one".