1105112431 has 4 divisors (see below), whose sum is σ = 1106044632. Its totient is φ = 1104180232.

The previous prime is 1105112423. The next prime is 1105112467. The reversal of 1105112431 is 1342115011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1342115011 = 43 ⋅31211977.

It is a cyclic number.

It is not a de Polignac number, because 1105112431 - 2³ = 1105112423 is a prime.

It is a super-2 number, since 2×1105112431² = 2442546970301459522, 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 = 1105112399 and 1105112408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105116431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464320 + ... + 466693.

It is an arithmetic number, because the mean of its divisors is an integer number (276511158).

Almost surely, 2^1105112431 is an apocalyptic number.

1105112431 is a deficient number, since it is larger than the sum of its proper divisors (932201).

1105112431 is an equidigital number, since it uses as much as digits as its factorization.

1105112431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932200.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1105112431 is about 33243.2313561723. The cubic root of 1105112431 is about 1033.8768748359.

Adding to 1105112431 its reverse (1342115011), we get a palindrome (2447227442).

The spelling of 1105112431 in words is "one billion, one hundred five million, one hundred twelve thousand, four hundred thirty-one".