1252538311 has 4 divisors (see below), whose sum is σ = 1318461400. Its totient is φ = 1186615224.

The previous prime is 1252538263. The next prime is 1252538321. The reversal of 1252538311 is 1138352521.

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

It is a cyclic number.

It is not a de Polignac number, because 1252538311 - 2⁹ = 1252537799 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 (1252538321) 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, 32961516 + ... + 32961553.

It is an arithmetic number, because the mean of its divisors is an integer number (329615350).

Almost surely, 2^1252538311 is an apocalyptic number.

1252538311 is a deficient number, since it is larger than the sum of its proper divisors (65923089).

1252538311 is an equidigital number, since it uses as much as digits as its factorization.

1252538311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65923088.

The product of its digits is 7200, while the sum is 31.

The square root of 1252538311 is about 35391.2179926038. The cubic root of 1252538311 is about 1077.9460020591.

The spelling of 1252538311 in words is "one billion, two hundred fifty-two million, five hundred thirty-eight thousand, three hundred eleven".