1361212403 has 2 divisors, whose sum is σ = 1361212404. Its totient is φ = 1361212402.

The previous prime is 1361212397. The next prime is 1361212417. The reversal of 1361212403 is 3042121631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361212403 - 2⁶ = 1361212339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361212483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680606201 + 680606202.

It is an arithmetic number, because the mean of its divisors is an integer number (680606202).

Almost surely, 2^1361212403 is an apocalyptic number.

1361212403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361212403 is an equidigital number, since it uses as much as digits as its factorization.

1361212403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1361212403 is about 36894.6121134238. The cubic root of 1361212403 is about 1108.2607838743.

The spelling of 1361212403 in words is "one billion, three hundred sixty-one million, two hundred twelve thousand, four hundred three".