2101031025 has 24 divisors (see below), whose sum is σ = 3624738240. Its totient is φ = 1071829440.

The previous prime is 2101030999. The next prime is 2101031027. The reversal of 2101031025 is 5201301012.

It is not a de Polignac number, because 2101031025 - 2⁹ = 2101030513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 2101030995 and 2101031013.

It is not an unprimeable number, because it can be changed into a prime (2101031027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 607270 + ... + 610719.

It is an arithmetic number, because the mean of its divisors is an integer number (151030760).

Almost surely, 2^2101031025 is an apocalyptic number.

2101031025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2101031025 is a deficient number, since it is larger than the sum of its proper divisors (1523707215).

2101031025 is a wasteful number, since it uses less digits than its factorization.

2101031025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218025 (or 1218020 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 2101031025 is about 45837.0049741473. The cubic root of 2101031025 is about 1280.7887035776.

Adding to 2101031025 its reverse (5201301012), we get a palindrome (7302332037).

The spelling of 2101031025 in words is "two billion, one hundred one million, thirty-one thousand, twenty-five".