101913139 has 4 divisors (see below), whose sum is σ = 104283256. Its totient is φ = 99543024.

The previous prime is 101913137. The next prime is 101913143. The reversal of 101913139 is 931319101.

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 101913139 - 2¹ = 101913137 is a prime.

It is a super-3 number, since 3×101913139³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (101913137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1184994 + ... + 1185079.

It is an arithmetic number, because the mean of its divisors is an integer number (26070814).

Almost surely, 2^101913139 is an apocalyptic number.

101913139 is a deficient number, since it is larger than the sum of its proper divisors (2370117).

101913139 is an equidigital number, since it uses as much as digits as its factorization.

101913139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370116.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 101913139 is about 10095.2037621833. The cubic root of 101913139 is about 467.1002066909.

The spelling of 101913139 in words is "one hundred one million, nine hundred thirteen thousand, one hundred thirty-nine".