312122141 has 4 divisors (see below), whose sum is σ = 318011292. Its totient is φ = 306232992.

The previous prime is 312122119. The next prime is 312122143. The reversal of 312122141 is 141221213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 266505625 + 45616516 = 16325^2 + 6754^2 .

It is a cyclic number.

It is not a de Polignac number, because 312122141 - 2¹⁴ = 312105757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312122143) 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, 2944496 + ... + 2944601.

It is an arithmetic number, because the mean of its divisors is an integer number (79502823).

Almost surely, 2^312122141 is an apocalyptic number.

It is an amenable number.

312122141 is a deficient number, since it is larger than the sum of its proper divisors (5889151).

312122141 is an equidigital number, since it uses as much as digits as its factorization.

312122141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889150.

The product of its digits is 96, while the sum is 17.

The square root of 312122141 is about 17666.9788305754. The cubic root of 312122141 is about 678.3307826024.

Adding to 312122141 its reverse (141221213), we get a palindrome (453343354).

The spelling of 312122141 in words is "three hundred twelve million, one hundred twenty-two thousand, one hundred forty-one".