102648631 has 4 divisors (see below), whose sum is σ = 103608072. Its totient is φ = 101689192.

The previous prime is 102648629. The next prime is 102648643. The reversal of 102648631 is 136846201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102648631 - 2¹ = 102648629 is a prime.

It is a super-2 number, since 2×102648631² = 21073482892348322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102648593 and 102648602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102648031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479560 + ... + 479773.

It is an arithmetic number, because the mean of its divisors is an integer number (25902018).

Almost surely, 2^102648631 is an apocalyptic number.

102648631 is a deficient number, since it is larger than the sum of its proper divisors (959441).

102648631 is an equidigital number, since it uses as much as digits as its factorization.

102648631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959440.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 102648631 is about 10131.5660684812. The cubic root of 102648631 is about 468.2211786615.

The spelling of 102648631 in words is "one hundred two million, six hundred forty-eight thousand, six hundred thirty-one".