2102345253 has 16 divisors (see below), whose sum is σ = 3127962240. Its totient is φ = 1395544032.

The previous prime is 2102345221. The next prime is 2102345303. The reversal of 2102345253 is 3525432012.

It is a happy number.

2102345253 is a `hidden beast` number, since 2 + 102 + 34 + 525 + 3 = 666.

It is not a de Polignac number, because 2102345253 - 2⁵ = 2102345221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102341253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160801 + ... + 173382.

It is an arithmetic number, because the mean of its divisors is an integer number (195497640).

Almost surely, 2^2102345253 is an apocalyptic number.

It is an amenable number.

2102345253 is a deficient number, since it is larger than the sum of its proper divisors (1025616987).

2102345253 is a wasteful number, since it uses less digits than its factorization.

2102345253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334425 (or 334419 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2102345253 is about 45851.3386173185. The cubic root of 2102345253 is about 1281.0556990847.

Adding to 2102345253 its reverse (3525432012), we get a palindrome (5627777265).

The spelling of 2102345253 in words is "two billion, one hundred two million, three hundred forty-five thousand, two hundred fifty-three".