1303653397 has 4 divisors (see below), whose sum is σ = 1308103020. Its totient is φ = 1299203776.

The previous prime is 1303653389. The next prime is 1303653401. The reversal of 1303653397 is 7933563031.

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 1142845636 + 160807761 = 33806^2 + 12681^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303653397 - 2³ = 1303653389 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 (1303653797) 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, 2224372 + ... + 2224957.

It is an arithmetic number, because the mean of its divisors is an integer number (327025755).

Almost surely, 2^1303653397 is an apocalyptic number.

It is an amenable number.

1303653397 is a deficient number, since it is larger than the sum of its proper divisors (4449623).

1303653397 is an equidigital number, since it uses as much as digits as its factorization.

1303653397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449622.

The product of its (nonzero) digits is 153090, while the sum is 40.

The square root of 1303653397 is about 36106.1407104110. The cubic root of 1303653397 is about 1092.4143092500.

The spelling of 1303653397 in words is "one billion, three hundred three million, six hundred fifty-three thousand, three hundred ninety-seven".