1203140513 has 4 divisors (see below), whose sum is σ = 1203362580. Its totient is φ = 1202918448.

The previous prime is 1203140501. The next prime is 1203140539. The reversal of 1203140513 is 3150413021.

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 523860544 + 679279969 = 22888^2 + 26063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203140513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203140573) 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, 102698 + ... + 113811.

It is an arithmetic number, because the mean of its divisors is an integer number (300840645).

Almost surely, 2^1203140513 is an apocalyptic number.

It is an amenable number.

1203140513 is a deficient number, since it is larger than the sum of its proper divisors (222067).

1203140513 is an equidigital number, since it uses as much as digits as its factorization.

1203140513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222066.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1203140513 is about 34686.3159329439. The cubic root of 1203140513 is about 1063.5847874992.

Adding to 1203140513 its reverse (3150413021), we get a palindrome (4353553534).

The spelling of 1203140513 in words is "one billion, two hundred three million, one hundred forty thousand, five hundred thirteen".