101139830 has 32 divisors (see below), whose sum is σ = 201871008. Its totient is φ = 36172800.

The previous prime is 101139823. The next prime is 101139853. The reversal of 101139830 is 38931101.

It is a self number, because there is not a number n which added to its sum of digits gives 101139830.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 827 + ... + 14246.

It is an arithmetic number, because the mean of its divisors is an integer number (6308469).

Almost surely, 2^101139830 is an apocalyptic number.

101139830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101139830 is a deficient number, since it is larger than the sum of its proper divisors (100731178).

101139830 is a wasteful number, since it uses less digits than its factorization.

101139830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 101139830 is about 10056.8300174558. The cubic root of 101139830 is about 465.9157657494.

It can be divided in two parts, 101 and 139830, that added together give a palindrome (139931).

The spelling of 101139830 in words is "one hundred one million, one hundred thirty-nine thousand, eight hundred thirty".