101389331 has 4 divisors (see below), whose sum is σ = 101417592. Its totient is φ = 101361072.

The previous prime is 101389319. The next prime is 101389357. The reversal of 101389331 is 133983101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101389331 is a prime.

It is a super-2 number, since 2×101389331² = 20559592881255122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101389294 and 101389303.

It is not an unprimeable number, because it can be changed into a prime (101389531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7805 + ... + 16238.

It is an arithmetic number, because the mean of its divisors is an integer number (25354398).

Almost surely, 2^101389331 is an apocalyptic number.

101389331 is a deficient number, since it is larger than the sum of its proper divisors (28261).

101389331 is an equidigital number, since it uses as much as digits as its factorization.

101389331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28260.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 101389331 is about 10069.2269315971. The cubic root of 101389331 is about 466.2985723750.

The spelling of 101389331 in words is "one hundred one million, three hundred eighty-nine thousand, three hundred thirty-one".