1312002421023 has 8 divisors (see below), whose sum is σ = 1999241784448. Its totient is φ = 749715669144.

The previous prime is 1312002421013. The next prime is 1312002421043. The reversal of 1312002421023 is 3201242002131.

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

It is not a de Polignac number, because 1312002421023 - 2⁴ = 1312002421007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 62476305763 = 1312002421023 / (1 + 3 + 1 + 2 + 0 + 0 + 2 + 4 + 2 + 1 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312002421013) 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, 31238152861 + ... + 31238152902.

It is an arithmetic number, because the mean of its divisors is an integer number (249905223056).

Almost surely, 2^{1312002421023} is an apocalyptic number.

1312002421023 is a deficient number, since it is larger than the sum of its proper divisors (687239363425).

1312002421023 is an equidigital number, since it uses as much as digits as its factorization.

1312002421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62476305773.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1312002421023 its reverse (3201242002131), we get a palindrome (4513244423154).

The spelling of 1312002421023 in words is "one trillion, three hundred twelve billion, two million, four hundred twenty-one thousand, twenty-three".