101103440 has 20 divisors (see below), whose sum is σ = 235065684. Its totient is φ = 40441344.

The previous prime is 101103371. The next prime is 101103451. The reversal of 101103440 is 44301101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25969216 + 75134224 = 5096^2 + 8668^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631817 + ... + 631976.

Almost surely, 2^101103440 is an apocalyptic number.

101103440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101103440 is an abundant number, since it is smaller than the sum of its proper divisors (133962244).

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

101103440 is a wasteful number, since it uses less digits than its factorization.

101103440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263806 (or 1263800 counting only the distinct ones).

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

The square root of 101103440 is about 10055.0206364781. The cubic root of 101103440 is about 465.8598803857.

Adding to 101103440 its reverse (44301101), we get a palindrome (145404541).

The spelling of 101103440 in words is "one hundred one million, one hundred three thousand, four hundred forty".