1231101353 has 4 divisors (see below), whose sum is σ = 1232904528. Its totient is φ = 1229298180.

The previous prime is 1231101343. The next prime is 1231101373. The reversal of 1231101353 is 3531011321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3531011321 = 31 ⋅113903591.

It is a cyclic number.

It is not a de Polignac number, because 1231101353 - 2⁸ = 1231101097 is a prime.

It is a super-2 number, since 2×1231101353² = 3031221082716861218, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 900563 + ... + 901928.

It is an arithmetic number, because the mean of its divisors is an integer number (308226132).

Almost surely, 2^1231101353 is an apocalyptic number.

It is an amenable number.

1231101353 is a deficient number, since it is larger than the sum of its proper divisors (1803175).

1231101353 is an equidigital number, since it uses as much as digits as its factorization.

1231101353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803174.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1231101353 is about 35087.0539230640. The cubic root of 1231101353 is about 1071.7609669881.

Adding to 1231101353 its reverse (3531011321), we get a palindrome (4762112674).

The spelling of 1231101353 in words is "one billion, two hundred thirty-one million, one hundred one thousand, three hundred fifty-three".