101423531 has 16 divisors (see below), whose sum is σ = 112441056. Its totient is φ = 91476000.

The previous prime is 101423473. The next prime is 101423551. The reversal of 101423531 is 135324101.

It is not a de Polignac number, because 101423531 - 2⁶ = 101423467 is a prime.

It is a super-2 number, since 2×101423531² = 20573465281015922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101423551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240701 + ... + 241121.

It is an arithmetic number, because the mean of its divisors is an integer number (7027566).

Almost surely, 2^101423531 is an apocalyptic number.

101423531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101423531 is a deficient number, since it is larger than the sum of its proper divisors (11017525).

101423531 is an equidigital number, since it uses as much as digits as its factorization.

101423531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 101423531 is about 10070.9250319918. The cubic root of 101423531 is about 466.3509960974.

Adding to 101423531 its reverse (135324101), we get a palindrome (236747632).

The spelling of 101423531 in words is "one hundred one million, four hundred twenty-three thousand, five hundred thirty-one".