102630813 has 4 divisors (see below), whose sum is σ = 136841088. Its totient is φ = 68420540.

The previous prime is 102630811. The next prime is 102630817. The reversal of 102630813 is 318036201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102630813 - 2¹ = 102630811 is a prime.

It is a super-3 number, since 3×102630813³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102630811) 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, 17105133 + ... + 17105138.

It is an arithmetic number, because the mean of its divisors is an integer number (34210272).

Almost surely, 2^102630813 is an apocalyptic number.

It is an amenable number.

102630813 is a deficient number, since it is larger than the sum of its proper divisors (34210275).

102630813 is an equidigital number, since it uses as much as digits as its factorization.

102630813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34210274.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 102630813 is about 10130.6866993309. The cubic root of 102630813 is about 468.1940854354.

The spelling of 102630813 in words is "one hundred two million, six hundred thirty thousand, eight hundred thirteen".