101031523 has 4 divisors (see below), whose sum is σ = 101802888. Its totient is φ = 100260160.

The previous prime is 101031521. The next prime is 101031547. The reversal of 101031523 is 325130101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325130101 = 73 ⋅4453837.

It is a cyclic number.

It is not a de Polignac number, because 101031523 - 2¹ = 101031521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101031497 and 101031506.

It is not an unprimeable number, because it can be changed into a prime (101031521) 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, 385486 + ... + 385747.

It is an arithmetic number, because the mean of its divisors is an integer number (25450722).

Almost surely, 2^101031523 is an apocalyptic number.

101031523 is a deficient number, since it is larger than the sum of its proper divisors (771365).

101031523 is an equidigital number, since it uses as much as digits as its factorization.

101031523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771364.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 101031523 is about 10051.4438266351. The cubic root of 101031523 is about 465.7493955462.

Adding to 101031523 its reverse (325130101), we get a palindrome (426161624).

The spelling of 101031523 in words is "one hundred one million, thirty-one thousand, five hundred twenty-three".