1311320934 has 64 divisors (see below), whose sum is σ = 3633108480. Its totient is φ = 340601760.

The previous prime is 1311320897. The next prime is 1311320953. The reversal of 1311320934 is 4390231131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1311320898 and 1311320907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153529 + ... + 161844.

It is an arithmetic number, because the mean of its divisors is an integer number (56767320).

Almost surely, 2^1311320934 is an apocalyptic number.

1311320934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1311320934 is an abundant number, since it is smaller than the sum of its proper divisors (2321787546).

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

1311320934 is a wasteful number, since it uses less digits than its factorization.

1311320934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315402 (or 315396 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1311320934 is about 36212.1655524770. The cubic root of 1311320934 is about 1094.5518301056.

The spelling of 1311320934 in words is "one billion, three hundred eleven million, three hundred twenty thousand, nine hundred thirty-four".