1101142431 has 20 divisors (see below), whose sum is σ = 1649302600. Its totient is φ = 732137616.

The previous prime is 1101142403. The next prime is 1101142433. The reversal of 1101142431 is 1342411011.

It is not a de Polignac number, because 1101142431 - 2⁷ = 1101142303 is a prime.

It is a super-2 number, since 2×1101142431² = 2425029306697179522, 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 (1101142433) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12765 + ... + 48633.

It is an arithmetic number, because the mean of its divisors is an integer number (82465130).

Almost surely, 2^1101142431 is an apocalyptic number.

1101142431 is a deficient number, since it is larger than the sum of its proper divisors (548160169).

1101142431 is an equidigital number, since it uses as much as digits as its factorization.

1101142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36260 (or 36251 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1101142431 is about 33183.4662294342. The cubic root of 1101142431 is about 1032.6373581150.

Adding to 1101142431 its reverse (1342411011), we get a palindrome (2443553442).

The spelling of 1101142431 in words is "one billion, one hundred one million, one hundred forty-two thousand, four hundred thirty-one".