1131457013 has 4 divisors (see below), whose sum is σ = 1131742560. Its totient is φ = 1131171468.

The previous prime is 1131457007. The next prime is 1131457021. The reversal of 1131457013 is 3107541311.

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 1131457013 - 2²⁰ = 1130408437 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 (1131453013) 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, 136745 + ... + 144782.

It is an arithmetic number, because the mean of its divisors is an integer number (282935640).

Almost surely, 2^1131457013 is an apocalyptic number.

It is an amenable number.

1131457013 is a deficient number, since it is larger than the sum of its proper divisors (285547).

1131457013 is an equidigital number, since it uses as much as digits as its factorization.

1131457013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285546.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1131457013 is about 33637.1374079305. The cubic root of 1131457013 is about 1042.0279135442.

Adding to 1131457013 its reverse (3107541311), we get a palindrome (4238998324).

The spelling of 1131457013 in words is "one billion, one hundred thirty-one million, four hundred fifty-seven thousand, thirteen".