1101431031 has 8 divisors (see below), whose sum is σ = 1468965120. Its totient is φ = 734092152.

The previous prime is 1101430963. The next prime is 1101431033. The reversal of 1101431031 is 1301341011.

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

It is not a de Polignac number, because 1101431031 - 2⁷ = 1101430903 is a prime.

It is a super-2 number, since 2×1101431031² = 2426300632099445922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101431031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101431033) 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, 35085 + ... + 58598.

It is an arithmetic number, because the mean of its divisors is an integer number (183620640).

Almost surely, 2^1101431031 is an apocalyptic number.

1101431031 is a deficient number, since it is larger than the sum of its proper divisors (367534089).

1101431031 is an equidigital number, since it uses as much as digits as its factorization.

1101431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97605.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1101431031 is about 33187.8144956850. The cubic root of 1101431031 is about 1032.7275653704.

Adding to 1101431031 its reverse (1301341011), we get a palindrome (2402772042).

The spelling of 1101431031 in words is "one billion, one hundred one million, four hundred thirty-one thousand, thirty-one".