1131403313 has 8 divisors (see below), whose sum is σ = 1144750080. Its totient is φ = 1118098800.

The previous prime is 1131403309. The next prime is 1131403337. The reversal of 1131403313 is 3133041311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131403313 - 2² = 1131403309 is a prime.

It is a super-3 number, since 3×1131403313³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1131403513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45008 + ... + 65486.

It is an arithmetic number, because the mean of its divisors is an integer number (143093760).

Almost surely, 2^1131403313 is an apocalyptic number.

It is an amenable number.

1131403313 is a deficient number, since it is larger than the sum of its proper divisors (13346767).

1131403313 is a wasteful number, since it uses less digits than its factorization.

1131403313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21127.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1131403313 is about 33636.3391735783. The cubic root of 1131403313 is about 1042.0114280794.

Adding to 1131403313 its reverse (3133041311), we get a palindrome (4264444624).

The spelling of 1131403313 in words is "one billion, one hundred thirty-one million, four hundred three thousand, three hundred thirteen".