1303251240253 has 4 divisors (see below), whose sum is σ = 1303354874620. Its totient is φ = 1303147605888.

The previous prime is 1303251240233. The next prime is 1303251240299. The reversal of 1303251240253 is 3520421523031.

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 689476140409 + 613775099844 = 830347^2 + 783438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303251240253 - 2²⁵ = 1303217685821 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 (1303251240233) 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, 51798318 + ... + 51823471.

It is an arithmetic number, because the mean of its divisors is an integer number (325838718655).

Almost surely, 2^{1303251240253} is an apocalyptic number.

It is an amenable number.

1303251240253 is a deficient number, since it is larger than the sum of its proper divisors (103634367).

1303251240253 is a wasteful number, since it uses less digits than its factorization.

1303251240253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103634366.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 1303251240253 its reverse (3520421523031), we get a palindrome (4823672763284).

The spelling of 1303251240253 in words is "one trillion, three hundred three billion, two hundred fifty-one million, two hundred forty thousand, two hundred fifty-three".