1231101313 has 8 divisors (see below), whose sum is σ = 1326225600. Its totient is φ = 1136037648.

The previous prime is 1231101307. The next prime is 1231101341. The reversal of 1231101313 is 3131011321.

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 1231101313 - 2¹³ = 1231093121 is a prime.

It is a super-2 number, since 2×1231101313² = 3031220885740647938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231101343) 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, 32628 + ... + 59386.

It is an arithmetic number, because the mean of its divisors is an integer number (165778200).

Almost surely, 2^1231101313 is an apocalyptic number.

1231101313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1231101313 is a deficient number, since it is larger than the sum of its proper divisors (95124287).

1231101313 is a wasteful number, since it uses less digits than its factorization.

1231101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30311.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1231101313 is about 35087.0533530532. The cubic root of 1231101313 is about 1071.7609553805.

Adding to 1231101313 its reverse (3131011321), we get a palindrome (4362112634).

The spelling of 1231101313 in words is "one billion, two hundred thirty-one million, one hundred one thousand, three hundred thirteen".