102312380 has 12 divisors (see below), whose sum is σ = 214856040. Its totient is φ = 40924944.

The previous prime is 102312367. The next prime is 102312389. The reversal of 102312380 is 83213201.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5115619 = 102312380 / (1 + 0 + 2 + 3 + 1 + 2 + 3 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102312389) 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, 2557790 + ... + 2557829.

It is an arithmetic number, because the mean of its divisors is an integer number (17904670).

Almost surely, 2^102312380 is an apocalyptic number.

102312380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102312380 is an abundant number, since it is smaller than the sum of its proper divisors (112543660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102312380 is a wasteful number, since it uses less digits than its factorization.

102312380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115628 (or 5115626 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 102312380 is about 10114.9582302647. The cubic root of 102312380 is about 467.7093612685.

Adding to 102312380 its reverse (83213201), we get a palindrome (185525581).

The spelling of 102312380 in words is "one hundred two million, three hundred twelve thousand, three hundred eighty".