1380587231 has 4 divisors (see below), whose sum is σ = 1381310832. Its totient is φ = 1379863632.

The previous prime is 1380587227. The next prime is 1380587239. The reversal of 1380587231 is 1327850831.

It is a happy number.

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 1380587231 - 2² = 1380587227 is a prime.

It is a super-2 number, since 2×1380587231² = 3812042204800494722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380587239) 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, 358931 + ... + 362756.

It is an arithmetic number, because the mean of its divisors is an integer number (345327708).

Almost surely, 2^1380587231 is an apocalyptic number.

1380587231 is a deficient number, since it is larger than the sum of its proper divisors (723601).

1380587231 is an equidigital number, since it uses as much as digits as its factorization.

1380587231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723600.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1380587231 is about 37156.2542649283. The cubic root of 1380587231 is about 1113.4941783482.

The spelling of 1380587231 in words is "one billion, three hundred eighty million, five hundred eighty-seven thousand, two hundred thirty-one".