1131302101 has 4 divisors (see below), whose sum is σ = 1132066432. Its totient is φ = 1130537772.

The previous prime is 1131302087. The next prime is 1131302147. The reversal of 1131302101 is 1012031311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1012031311 = 223 ⋅4538257.

It is a cyclic number.

It is not a de Polignac number, because 1131302101 - 2¹³ = 1131293909 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 (1131302191) 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, 379941 + ... + 382906.

It is an arithmetic number, because the mean of its divisors is an integer number (283016608).

Almost surely, 2^1131302101 is an apocalyptic number.

It is an amenable number.

1131302101 is a deficient number, since it is larger than the sum of its proper divisors (764331).

1131302101 is an equidigital number, since it uses as much as digits as its factorization.

1131302101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764330.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1131302101 is about 33634.8346361328. The cubic root of 1131302101 is about 1041.9803553976.

Adding to 1131302101 its reverse (1012031311), we get a palindrome (2143333412).

The spelling of 1131302101 in words is "one billion, one hundred thirty-one million, three hundred two thousand, one hundred one".