1311222096 has 30 divisors (see below), whose sum is σ = 3669601130. Its totient is φ = 437073984.

The previous prime is 1311222089. The next prime is 1311222109. The reversal of 1311222096 is 6902221131.

It can be written as a sum of positive squares in only one way, i.e., 1104897600 + 206324496 = 33240^2 + 14364^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4552711 + ... + 4552998.

Almost surely, 2^1311222096 is an apocalyptic number.

1311222096 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311222096 is an abundant number, since it is smaller than the sum of its proper divisors (2358379034).

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

1311222096 is a wasteful number, since it uses less digits than its factorization.

1311222096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9105723 (or 9105714 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1311222096 is about 36210.8008196450. The cubic root of 1311222096 is about 1094.5243295833.

The spelling of 1311222096 in words is "one billion, three hundred eleven million, two hundred twenty-two thousand, ninety-six".