2103214145 has 4 divisors (see below), whose sum is σ = 2523856980. Its totient is φ = 1682571312.

The previous prime is 2103214133. The next prime is 2103214147. The reversal of 2103214145 is 5414123012.

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 1223320576 + 879893569 = 34976^2 + 29663^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103214145 - 2¹⁸ = 2102952001 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2103214145.

It is not an unprimeable number, because it can be changed into a prime (2103214147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210321410 + ... + 210321419.

It is an arithmetic number, because the mean of its divisors is an integer number (630964245).

Almost surely, 2^2103214145 is an apocalyptic number.

It is an amenable number.

2103214145 is a deficient number, since it is larger than the sum of its proper divisors (420642835).

2103214145 is an equidigital number, since it uses as much as digits as its factorization.

2103214145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420642834.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2103214145 is about 45860.8127381101. The cubic root of 2103214145 is about 1281.2321600689.

Adding to 2103214145 its reverse (5414123012), we get a palindrome (7517337157).

The spelling of 2103214145 in words is "two billion, one hundred three million, two hundred fourteen thousand, one hundred forty-five".