1305249301 has 4 divisors (see below), whose sum is σ = 1305369504. Its totient is φ = 1305129100.

The previous prime is 1305249293. The next prime is 1305249329. The reversal of 1305249301 is 1039425031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1305249301 - 2³ = 1305249293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305249301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305249401) 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, 41995 + ... + 66136.

It is an arithmetic number, because the mean of its divisors is an integer number (326342376).

Almost surely, 2^1305249301 is an apocalyptic number.

It is an amenable number.

1305249301 is a deficient number, since it is larger than the sum of its proper divisors (120203).

1305249301 is a wasteful number, since it uses less digits than its factorization.

1305249301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120202.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1305249301 is about 36128.2341251271. The cubic root of 1305249301 is about 1092.8598973813.

The spelling of 1305249301 in words is "one billion, three hundred five million, two hundred forty-nine thousand, three hundred one".