2102310545 has 12 divisors (see below), whose sum is σ = 2529255900. Its totient is φ = 1677536640.

The previous prime is 2102310503. The next prime is 2102310557. The reversal of 2102310545 is 5450132012.

It can be written as a sum of positive squares in 6 ways, for example, as 279959824 + 1822350721 = 16732^2 + 42689^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2102310545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102310545.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1356431 + ... + 1357979.

It is an arithmetic number, because the mean of its divisors is an integer number (210771325).

Almost surely, 2^2102310545 is an apocalyptic number.

It is an amenable number.

2102310545 is a deficient number, since it is larger than the sum of its proper divisors (426945355).

2102310545 is an frugal number, since it uses more digits than its factorization.

2102310545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2102310545 is about 45850.9601317137. The cubic root of 2102310545 is about 1281.0486493188.

Adding to 2102310545 its reverse (5450132012), we get a palindrome (7552442557).

The spelling of 2102310545 in words is "two billion, one hundred two million, three hundred ten thousand, five hundred forty-five".