1103440431 has 16 divisors (see below), whose sum is σ = 1486921568. Its totient is φ = 727833600.

The previous prime is 1103440397. The next prime is 1103440439. The reversal of 1103440431 is 1340443011.

It is not a de Polignac number, because 1103440431 - 2²¹ = 1101343279 is a prime.

It is a super-2 number, since 2×1103440431² = 2435161569530931522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103440398 and 1103440407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103440439) 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, 108651 + ... + 118371.

It is an arithmetic number, because the mean of its divisors is an integer number (92932598).

Almost surely, 2^1103440431 is an apocalyptic number.

1103440431 is a deficient number, since it is larger than the sum of its proper divisors (383481137).

1103440431 is a wasteful number, since it uses less digits than its factorization.

1103440431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1103440431 is about 33218.0738604754. The cubic root of 1103440431 is about 1033.3552040347.

Adding to 1103440431 its reverse (1340443011), we get a palindrome (2443883442).

The spelling of 1103440431 in words is "one billion, one hundred three million, four hundred forty thousand, four hundred thirty-one".