312021101230045 has 4 divisors (see below), whose sum is σ = 374425321476060. Its totient is φ = 249616880984032.

The previous prime is 312021101230043. The next prime is 312021101230051. The reversal of 312021101230045 is 540032101120213.

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 63741014537209 + 248280086692836 = 7983797^2 + 15756906^2 .

It is a cyclic number.

It is not a de Polignac number, because 312021101230045 - 2¹ = 312021101230043 is a prime.

It is a super-2 number, since 2×312021101230045² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312021101230043) 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, 31202110123000 + ... + 31202110123009.

It is an arithmetic number, because the mean of its divisors is an integer number (93606330369015).

Almost surely, 2^{312021101230045} is an apocalyptic number.

It is an amenable number.

312021101230045 is a deficient number, since it is larger than the sum of its proper divisors (62404220246015).

312021101230045 is an equidigital number, since it uses as much as digits as its factorization.

312021101230045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62404220246014.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 312021101230045 its reverse (540032101120213), we get a palindrome (852053202350258).

The spelling of 312021101230045 in words is "three hundred twelve trillion, twenty-one billion, one hundred one million, two hundred thirty thousand, forty-five".