1225531234311 has 8 divisors (see below), whose sum is σ = 1636797198960. Its totient is φ = 815643046272.

The previous prime is 1225531234273. The next prime is 1225531234339. The reversal of 1225531234311 is 1134321355221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225531234311 - 2¹⁰ = 1225531233287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225531234511) 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, 344442076 + ... + 344445633.

It is an arithmetic number, because the mean of its divisors is an integer number (204599649870).

Almost surely, 2^{1225531234311} is an apocalyptic number.

1225531234311 is a deficient number, since it is larger than the sum of its proper divisors (411265964649).

1225531234311 is an equidigital number, since it uses as much as digits as its factorization.

1225531234311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688888305.

The product of its digits is 21600, while the sum is 33.

Adding to 1225531234311 its reverse (1134321355221), we get a palindrome (2359852589532).

The spelling of 1225531234311 in words is "one trillion, two hundred twenty-five billion, five hundred thirty-one million, two hundred thirty-four thousand, three hundred eleven".