102661310 has 24 divisors (see below), whose sum is σ = 189945000. Its totient is φ = 39949344.

The previous prime is 102661309. The next prime is 102661319. The reversal of 102661310 is 13166201.

It is a super-2 number, since 2×102661310² = 21078689141832200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102661319) 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 11 ways as a sum of consecutive naturals, for example, 9941 + ... + 17439.

It is an arithmetic number, because the mean of its divisors is an integer number (7914375).

Almost surely, 2^102661310 is an apocalyptic number.

102661310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102661310 is a deficient number, since it is larger than the sum of its proper divisors (87283690).

102661310 is an equidigital number, since it uses as much as digits as its factorization.

102661310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580 (or 7543 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 102661310 is about 10132.1917668390. The cubic root of 102661310 is about 468.2404558529.

The spelling of 102661310 in words is "one hundred two million, six hundred sixty-one thousand, three hundred ten".