1231333122131 has 8 divisors (see below), whose sum is σ = 1407742443360. Its totient is φ = 1055049948288.

The previous prime is 1231333122121. The next prime is 1231333122161. The reversal of 1231333122131 is 1312213331321.

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

It is a de Polignac number, because none of the positive numbers 2^k-1231333122131 is a prime.

It is a super-2 number, since 2×1231333122131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231333122131.

It is not an unprimeable number, because it can be changed into a prime (1231333122121) 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, 31515926 + ... + 31554971.

It is an arithmetic number, because the mean of its divisors is an integer number (175967805420).

Almost surely, 2^{1231333122131} is an apocalyptic number.

1231333122131 is a deficient number, since it is larger than the sum of its proper divisors (176409321229).

1231333122131 is an equidigital number, since it uses as much as digits as its factorization.

1231333122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63073693.

The product of its digits is 1944, while the sum is 26.

Adding to 1231333122131 its reverse (1312213331321), we get a palindrome (2543546453452).

The spelling of 1231333122131 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-three million, one hundred twenty-two thousand, one hundred thirty-one".