1387531101 has 8 divisors (see below), whose sum is σ = 2018227104. Its totient is φ = 840927920.

The previous prime is 1387531091. The next prime is 1387531127. The reversal of 1387531101 is 1011357831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1387531101 - 2⁶ = 1387531037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387531001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21023166 + ... + 21023231.

It is an arithmetic number, because the mean of its divisors is an integer number (252278388).

Almost surely, 2^1387531101 is an apocalyptic number.

1387531101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1387531101 is a deficient number, since it is larger than the sum of its proper divisors (630696003).

1387531101 is a wasteful number, since it uses less digits than its factorization.

1387531101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42046411.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1387531101 is about 37249.5785345284. The cubic root of 1387531101 is about 1115.3578857459.

Adding to 1387531101 its reverse (1011357831), we get a palindrome (2398888932).

The spelling of 1387531101 in words is "one billion, three hundred eighty-seven million, five hundred thirty-one thousand, one hundred one".