1100400344 has 32 divisors (see below), whose sum is σ = 2204690400. Its totient is φ = 513077760.

The previous prime is 1100400319. The next prime is 1100400347. The reversal of 1100400344 is 4430040011.

It is a super-3 number, since 3×1100400344³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100400347) 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, 22292 + ... + 51939.

It is an arithmetic number, because the mean of its divisors is an integer number (68896575).

Almost surely, 2^1100400344 is an apocalyptic number.

It is an amenable number.

1100400344 is an abundant number, since it is smaller than the sum of its proper divisors (1104290056).

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

1100400344 is a wasteful number, since it uses less digits than its factorization.

1100400344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74363 (or 74359 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1100400344 is about 33172.2827673948. The cubic root of 1100400344 is about 1032.4053327366.

Adding to 1100400344 its reverse (4430040011), we get a palindrome (5530440355).

The spelling of 1100400344 in words is "one billion, one hundred million, four hundred thousand, three hundred forty-four".