2311001025145 has 4 divisors (see below), whose sum is σ = 2773201230180. Its totient is φ = 1848800820112.

The previous prime is 2311001025139. The next prime is 2311001025161. The reversal of 2311001025145 is 5415201001132.

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 438233408064 + 1872767617081 = 661992^2 + 1368491^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311001025145 - 2¹⁷ = 2311000894073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231100102510 + ... + 231100102519.

It is an arithmetic number, because the mean of its divisors is an integer number (693300307545).

Almost surely, 2^{2311001025145} is an apocalyptic number.

It is an amenable number.

2311001025145 is a deficient number, since it is larger than the sum of its proper divisors (462200205035).

2311001025145 is an equidigital number, since it uses as much as digits as its factorization.

2311001025145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462200205034.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 2311001025145 its reverse (5415201001132), we get a palindrome (7726202026277).

The spelling of 2311001025145 in words is "two trillion, three hundred eleven billion, one million, twenty-five thousand, one hundred forty-five".