1255213232231 has 4 divisors (see below), whose sum is σ = 1434529408272. Its totient is φ = 1075897056192.

The previous prime is 1255213232219. The next prime is 1255213232233. The reversal of 1255213232231 is 1322323125521.

It is a happy number.

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

It is not a de Polignac number, because 1255213232231 - 2³⁰ = 1254139490407 is a prime.

It is a super-2 number, since 2×1255213232231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255213232233) 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, 89658088010 + ... + 89658088023.

It is an arithmetic number, because the mean of its divisors is an integer number (358632352068).

Almost surely, 2^{1255213232231} is an apocalyptic number.

1255213232231 is a deficient number, since it is larger than the sum of its proper divisors (179316176041).

1255213232231 is an equidigital number, since it uses as much as digits as its factorization.

1255213232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179316176040.

The product of its digits is 21600, while the sum is 32.

Adding to 1255213232231 its reverse (1322323125521), we get a palindrome (2577536357752).

The spelling of 1255213232231 in words is "one trillion, two hundred fifty-five billion, two hundred thirteen million, two hundred thirty-two thousand, two hundred thirty-one".