1230311312033 has 4 divisors (see below), whose sum is σ = 1302682565700. Its totient is φ = 1157940058368.

The previous prime is 1230311311973. The next prime is 1230311312059. The reversal of 1230311312033 is 3302131130321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1089169838689 + 141141473344 = 1043633^2 + 375688^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230311312033 - 2³² = 1226016344737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230331312033) 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, 36185626808 + ... + 36185626841.

It is an arithmetic number, because the mean of its divisors is an integer number (325670641425).

Almost surely, 2^{1230311312033} is an apocalyptic number.

It is an amenable number.

1230311312033 is a deficient number, since it is larger than the sum of its proper divisors (72371253667).

1230311312033 is an equidigital number, since it uses as much as digits as its factorization.

1230311312033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72371253666.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1230311312033 its reverse (3302131130321), we get a palindrome (4532442442354).

The spelling of 1230311312033 in words is "one trillion, two hundred thirty billion, three hundred eleven million, three hundred twelve thousand, thirty-three".