1100111431 has 8 divisors (see below), whose sum is σ = 1104418640. Its totient is φ = 1095812928.

The previous prime is 1100111423. The next prime is 1100111443. The reversal of 1100111431 is 1341110011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1100111431 - 2³ = 1100111423 is a prime.

It is a super-2 number, since 2×1100111431² = 2420490321233735522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100111461) 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, 357160 + ... + 360226.

It is an arithmetic number, because the mean of its divisors is an integer number (138052330).

Almost surely, 2^1100111431 is an apocalyptic number.

1100111431 is a deficient number, since it is larger than the sum of its proper divisors (4307209).

1100111431 is an equidigital number, since it uses as much as digits as its factorization.

1100111431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1100111431 is about 33167.9277465446. The cubic root of 1100111431 is about 1032.3149712508.

Adding to 1100111431 its reverse (1341110011), we get a palindrome (2441221442).

The spelling of 1100111431 in words is "one billion, one hundred million, one hundred eleven thousand, four hundred thirty-one".