1131420331 has 8 divisors (see below), whose sum is σ = 1156852800. Its totient is φ = 1106044608.

The previous prime is 1131420293. The next prime is 1131420337. The reversal of 1131420331 is 1330241311.

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

It is not a de Polignac number, because 1131420331 - 2¹¹ = 1131418283 is a prime.

It is a super-2 number, since 2×1131420331² = 2560223930800299122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131420299 and 1131420308.

It is not an unprimeable number, because it can be changed into a prime (1131420337) 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, 27495 + ... + 54943.

It is an arithmetic number, because the mean of its divisors is an integer number (144606600).

Almost surely, 2^1131420331 is an apocalyptic number.

1131420331 is a deficient number, since it is larger than the sum of its proper divisors (25432469).

1131420331 is an equidigital number, since it uses as much as digits as its factorization.

1131420331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28373.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1131420331 is about 33636.5921430813. The cubic root of 1131420331 is about 1042.0166525240.

Adding to 1131420331 its reverse (1330241311), we get a palindrome (2461661642).

The spelling of 1131420331 in words is "one billion, one hundred thirty-one million, four hundred twenty thousand, three hundred thirty-one".