1103431155 has 32 divisors (see below), whose sum is σ = 1914954048. Its totient is φ = 540364800.

The previous prime is 1103431151. The next prime is 1103431159. The reversal of 1103431155 is 5511343011.

It is an interprime number because it is at equal distance from previous prime (1103431151) and next prime (1103431159).

It is not a de Polignac number, because 1103431155 - 2² = 1103431151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1103431151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42316 + ... + 63225.

It is an arithmetic number, because the mean of its divisors is an integer number (59842314).

Almost surely, 2^1103431155 is an apocalyptic number.

1103431155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1103431155 is a deficient number, since it is larger than the sum of its proper divisors (811522893).

1103431155 is a wasteful number, since it uses less digits than its factorization.

1103431155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105607.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1103431155 is about 33217.9342373965. The cubic root of 1103431155 is about 1033.3523084156.

Adding to 1103431155 its reverse (5511343011), we get a palindrome (6614774166).

The spelling of 1103431155 in words is "one billion, one hundred three million, four hundred thirty-one thousand, one hundred fifty-five".