1231131233308 has 6 divisors (see below), whose sum is σ = 2154479658296. Its totient is φ = 615565616652.

The previous prime is 1231131233257. The next prime is 1231131233309. The reversal of 1231131233308 is 8033321311321.

It is a super-2 number, since 2×1231131233308² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231131233308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231131233309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153891404160 + ... + 153891404167.

Almost surely, 2^{1231131233308} is an apocalyptic number.

It is an amenable number.

1231131233308 is a deficient number, since it is larger than the sum of its proper divisors (923348424988).

1231131233308 is a wasteful number, since it uses less digits than its factorization.

1231131233308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307782808331 (or 307782808329 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 1231131233308 its reverse (8033321311321), we get a palindrome (9264452544629).

The spelling of 1231131233308 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred thirty-three thousand, three hundred eight".