30381102 has 16 divisors (see below), whose sum is σ = 67513680. Its totient is φ = 10127016.

The previous prime is 30381101. The next prime is 30381119. The reversal of 30381102 is 20118303.

It is a super-2 number, since 2×30381102² = 1846022717468808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30381101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281253 + ... + 281360.

It is an arithmetic number, because the mean of its divisors is an integer number (4219605).

Almost surely, 2^30381102 is an apocalyptic number.

30381102 is an abundant number, since it is smaller than the sum of its proper divisors (37132578).

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

30381102 is a wasteful number, since it uses less digits than its factorization.

30381102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562624 (or 562618 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 30381102 is about 5511.9054781446. The cubic root of 30381102 is about 312.0334653453.

Adding to 30381102 its reverse (20118303), we get a palindrome (50499405).

The spelling of 30381102 in words is "thirty million, three hundred eighty-one thousand, one hundred two".