1023780207 has 4 divisors (see below), whose sum is σ = 1365040280. Its totient is φ = 682520136.

The previous prime is 1023780181. The next prime is 1023780221. The reversal of 1023780207 is 7020873201.

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

It is not a de Polignac number, because 1023780207 - 2⁶ = 1023780143 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 (1023780607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170630032 + ... + 170630037.

It is an arithmetic number, because the mean of its divisors is an integer number (341260070).

Almost surely, 2^1023780207 is an apocalyptic number.

1023780207 is a deficient number, since it is larger than the sum of its proper divisors (341260073).

1023780207 is an equidigital number, since it uses as much as digits as its factorization.

1023780207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341260072.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 1023780207 is about 31996.5655500712. The cubic root of 1023780207 is about 1007.8647196965.

The spelling of 1023780207 in words is "one billion, twenty-three million, seven hundred eighty thousand, two hundred seven".