2145101023 has 4 divisors (see below), whose sum is σ = 2310108808. Its totient is φ = 1980093240.

The previous prime is 2145100949. The next prime is 2145101069. The reversal of 2145101023 is 3201015412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145101023 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 (2145101093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82503873 + ... + 82503898.

It is an arithmetic number, because the mean of its divisors is an integer number (577527202).

Almost surely, 2^2145101023 is an apocalyptic number.

2145101023 is a deficient number, since it is larger than the sum of its proper divisors (165007785).

2145101023 is a wasteful number, since it uses less digits than its factorization.

2145101023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165007784.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2145101023 is about 46315.2353227315. The cubic root of 2145101023 is about 1289.6818362837.

Adding to 2145101023 its reverse (3201015412), we get a palindrome (5346116435).

The spelling of 2145101023 in words is "two billion, one hundred forty-five million, one hundred one thousand, twenty-three".