1310861340 has 48 divisors (see below), whose sum is σ = 4078236960. Its totient is φ = 349562880.

The previous prime is 1310861317. The next prime is 1310861353. The reversal of 1310861340 is 431680131.

1310861340 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 8 + 613 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213221 + ... + 1214300.

It is an arithmetic number, because the mean of its divisors is an integer number (84963270).

Almost surely, 2^1310861340 is an apocalyptic number.

1310861340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310861340 is an abundant number, since it is smaller than the sum of its proper divisors (2767375620).

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

1310861340 is a wasteful number, since it uses less digits than its factorization.

1310861340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427539 (or 2427531 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1310861340 is about 36205.8191455462. The cubic root of 1310861340 is about 1094.4239416988.

The spelling of 1310861340 in words is "one billion, three hundred ten million, eight hundred sixty-one thousand, three hundred forty".