1002031101 has 16 divisors (see below), whose sum is σ = 1562622400. Its totient is φ = 632861424.

The previous prime is 1002031097. The next prime is 1002031111. The reversal of 1002031101 is 1011302001.

It is not a de Polignac number, because 1002031101 - 2² = 1002031097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002031111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976126 + ... + 977151.

It is an arithmetic number, because the mean of its divisors is an integer number (97663900).

Almost surely, 2^1002031101 is an apocalyptic number.

It is an amenable number.

1002031101 is a deficient number, since it is larger than the sum of its proper divisors (560591299).

1002031101 is a wasteful number, since it uses less digits than its factorization.

1002031101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953305 (or 1953299 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1002031101 is about 31654.8748378508. The cubic root of 1002031101 is about 1000.6765758086.

Adding to 1002031101 its reverse (1011302001), we get a palindrome (2013333102).

The spelling of 1002031101 in words is "one billion, two million, thirty-one thousand, one hundred one".