2103431265 has 24 divisors (see below), whose sum is σ = 3926406120. Its totient is φ = 1035535104.

The previous prime is 2103431249. The next prime is 2103431273. The reversal of 2103431265 is 5621343012.

It can be written as a sum of positive squares in 4 ways, for example, as 50253921 + 2053177344 = 7089^2 + 45312^2 .

It is not a de Polignac number, because 2103431265 - 2⁴ = 2103431249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1797220 + ... + 1798389.

It is an arithmetic number, because the mean of its divisors is an integer number (163600255).

Almost surely, 2^2103431265 is an apocalyptic number.

It is an amenable number.

2103431265 is a deficient number, since it is larger than the sum of its proper divisors (1822974855).

2103431265 is a wasteful number, since it uses less digits than its factorization.

2103431265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595633 (or 3595630 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2103431265 is about 45863.1798396055. The cubic root of 2103431265 is about 1281.2762468072.

Adding to 2103431265 its reverse (5621343012), we get a palindrome (7724774277).

The spelling of 2103431265 in words is "two billion, one hundred three million, four hundred thirty-one thousand, two hundred sixty-five".