1312312100231 has 8 divisors (see below), whose sum is σ = 1445512358784. Its totient is φ = 1181428368120.

The previous prime is 1312312100221. The next prime is 1312312100317. The reversal of 1312312100231 is 1320012132131.

It is a happy number.

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-1312312100231 is a prime.

It is a super-2 number, since 2×1312312100231² (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 (1312312100221) 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, 579130421 + ... + 579132686.

It is an arithmetic number, because the mean of its divisors is an integer number (180689044848).

Almost surely, 2^{1312312100231} is an apocalyptic number.

1312312100231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1312312100231 is a deficient number, since it is larger than the sum of its proper divisors (133200258553).

1312312100231 is a wasteful number, since it uses less digits than its factorization.

1312312100231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158263221.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312312100231 its reverse (1320012132131), we get a palindrome (2632324232362).

The spelling of 1312312100231 in words is "one trillion, three hundred twelve billion, three hundred twelve million, one hundred thousand, two hundred thirty-one".