1312305526226 has 4 divisors (see below), whose sum is σ = 1968458289342. Its totient is φ = 656152763112.

The previous prime is 1312305526183. The next prime is 1312305526243. The reversal of 1312305526226 is 6226255032131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 788055675625 + 524249850601 = 887725^2 + 724051^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1312305526226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328076381555 + ... + 328076381558.

Almost surely, 2^{1312305526226} is an apocalyptic number.

1312305526226 is a deficient number, since it is larger than the sum of its proper divisors (656152763116).

1312305526226 is an equidigital number, since it uses as much as digits as its factorization.

1312305526226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656152763115.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 1312305526226 in words is "one trillion, three hundred twelve billion, three hundred five million, five hundred twenty-six thousand, two hundred twenty-six".