1023431113 has 8 divisors (see below), whose sum is σ = 1044073800. Its totient is φ = 1002837888.

The previous prime is 1023431107. The next prime is 1023431131. The reversal of 1023431113 is 3111343201.

It can be written as a sum of positive squares in 4 ways, for example, as 601868089 + 421563024 = 24533^2 + 20532^2 .

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 1023431113 - 2⁹ = 1023430601 is a prime.

It is a super-2 number, since 2×1023431113² = 2094822486112837538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023431183) 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, 30943 + ... + 54811.

It is an arithmetic number, because the mean of its divisors is an integer number (130509225).

Almost surely, 2^1023431113 is an apocalyptic number.

It is an amenable number.

1023431113 is a deficient number, since it is larger than the sum of its proper divisors (20642687).

1023431113 is an equidigital number, since it uses as much as digits as its factorization.

1023431113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24731.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1023431113 is about 31991.1099057222. The cubic root of 1023431113 is about 1007.7501509891.

Adding to 1023431113 its reverse (3111343201), we get a palindrome (4134774314).

The spelling of 1023431113 in words is "one billion, twenty-three million, four hundred thirty-one thousand, one hundred thirteen".