101231420 has 24 divisors (see below), whose sum is σ = 217111104. Its totient is φ = 39630656.

The previous prime is 101231407. The next prime is 101231423. The reversal of 101231420 is 24132101.

It is a junction number, because it is equal to n+sod(n) for n = 101231395 and 101231404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101231423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52907 + ... + 54786.

It is an arithmetic number, because the mean of its divisors is an integer number (9046296).

Almost surely, 2^101231420 is an apocalyptic number.

101231420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101231420 is an abundant number, since it is smaller than the sum of its proper divisors (115879684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101231420 is a wasteful number, since it uses less digits than its factorization.

101231420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107749 (or 107747 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101231420 is about 10061.3826087670. The cubic root of 101231420 is about 466.0563643317.

Adding to 101231420 its reverse (24132101), we get a palindrome (125363521).

The spelling of 101231420 in words is "one hundred one million, two hundred thirty-one thousand, four hundred twenty".