1312042123231 has 8 divisors (see below), whose sum is σ = 1534348264064. Its totient is φ = 1098453870360.

The previous prime is 1312042123213. The next prime is 1312042123247. The reversal of 1312042123231 is 1323212402131.

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

It is not a de Polignac number, because 1312042123231 - 2²³ = 1312033734623 is a prime.

It is a super-2 number, since 2×1312042123231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312042123196 and 1312042123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312042120231) 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, 2179471665 + ... + 2179472266.

It is an arithmetic number, because the mean of its divisors is an integer number (191793533008).

Almost surely, 2^{1312042123231} is an apocalyptic number.

1312042123231 is a deficient number, since it is larger than the sum of its proper divisors (222306140833).

1312042123231 is an equidigital number, since it uses as much as digits as its factorization.

1312042123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358943981.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1312042123231 its reverse (1323212402131), we get a palindrome (2635254525362).

The spelling of 1312042123231 in words is "one trillion, three hundred twelve billion, forty-two million, one hundred twenty-three thousand, two hundred thirty-one".