1213063487 has 4 divisors (see below), whose sum is σ = 1222615296. Its totient is φ = 1203511680.

The previous prime is 1213063469. The next prime is 1213063519. The reversal of 1213063487 is 7843603121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7843603121 = 113 ⋅69412417.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213063487 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 (1213063427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4775714 + ... + 4775967.

It is an arithmetic number, because the mean of its divisors is an integer number (305653824).

Almost surely, 2^1213063487 is an apocalyptic number.

1213063487 is a deficient number, since it is larger than the sum of its proper divisors (9551809).

1213063487 is an equidigital number, since it uses as much as digits as its factorization.

1213063487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9551808.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1213063487 is about 34829.0609548980. The cubic root of 1213063487 is about 1066.5007787706.

The spelling of 1213063487 in words is "one billion, two hundred thirteen million, sixty-three thousand, four hundred eighty-seven".