1011002387 has 4 divisors (see below), whose sum is σ = 1011712296. Its totient is φ = 1010292480.

The previous prime is 1011002381. The next prime is 1011002413. The reversal of 1011002387 is 7832001101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7832001101 = 23 ⋅340521787.

It is a cyclic number.

It is not a de Polignac number, because 1011002387 - 2⁸ = 1011002131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011002381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352814 + ... + 355667.

It is an arithmetic number, because the mean of its divisors is an integer number (252928074).

Almost surely, 2^1011002387 is an apocalyptic number.

1011002387 is a deficient number, since it is larger than the sum of its proper divisors (709909).

1011002387 is an equidigital number, since it uses as much as digits as its factorization.

1011002387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709908.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 1011002387 is about 31796.2637270482. The cubic root of 1011002387 is about 1003.6540936691.

Adding to 1011002387 its reverse (7832001101), we get a palindrome (8843003488).

The spelling of 1011002387 in words is "one billion, eleven million, two thousand, three hundred eighty-seven".