1380731711 has 4 divisors (see below), whose sum is σ = 1394402424. Its totient is φ = 1367061000.

The previous prime is 1380731669. The next prime is 1380731717. The reversal of 1380731711 is 1171370831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1380731711 - 2²⁶ = 1313622847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380731717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6835205 + ... + 6835406.

It is an arithmetic number, because the mean of its divisors is an integer number (348600606).

Almost surely, 2^1380731711 is an apocalyptic number.

1380731711 is a deficient number, since it is larger than the sum of its proper divisors (13670713).

1380731711 is a wasteful number, since it uses less digits than its factorization.

1380731711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13670712.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 1380731711 is about 37158.1984358768. The cubic root of 1380731711 is about 1113.5330197976.

The spelling of 1380731711 in words is "one billion, three hundred eighty million, seven hundred thirty-one thousand, seven hundred eleven".