1312241235551 has 8 divisors (see below), whose sum is σ = 1319421137664. Its totient is φ = 1305064558080.

The previous prime is 1312241235509. The next prime is 1312241235559. The reversal of 1312241235551 is 1555321422131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312241235551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312241235559) 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, 12215 + ... + 1620071.

It is an arithmetic number, because the mean of its divisors is an integer number (164927642208).

Almost surely, 2^{1312241235551} is an apocalyptic number.

1312241235551 is a deficient number, since it is larger than the sum of its proper divisors (7179902113).

1312241235551 is a wasteful number, since it uses less digits than its factorization.

1312241235551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612321.

The product of its digits is 36000, while the sum is 35.

Adding to 1312241235551 its reverse (1555321422131), we get a palindrome (2867562657682).

The spelling of 1312241235551 in words is "one trillion, three hundred twelve billion, two hundred forty-one million, two hundred thirty-five thousand, five hundred fifty-one".