1131321310 has 24 divisors (see below), whose sum is σ = 2368849320. Its totient is φ = 387881424.

The previous prime is 1131321307. The next prime is 1131321337. The reversal of 1131321310 is 131231311.

It is a super-2 number, since 2×1131321310² = 2559775812920232200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1153920 + ... + 1154899.

It is an arithmetic number, because the mean of its divisors is an integer number (98702055).

Almost surely, 2^1131321310 is an apocalyptic number.

1131321310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131321310 is an abundant number, since it is smaller than the sum of its proper divisors (1237528010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131321310 is a wasteful number, since it uses less digits than its factorization.

1131321310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308840 (or 2308833 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1131321310 is about 33635.1201870902. The cubic root of 1131321310 is about 1041.9862528165.

Adding to 1131321310 its reverse (131231311), we get a palindrome (1262552621).

It can be divided in two parts, 11313 and 21310, that added together give a palindrome (32623).

The spelling of 1131321310 in words is "one billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred ten".