1213632701 has 4 divisors (see below), whose sum is σ = 1223188992. Its totient is φ = 1204076412.

The previous prime is 1213632683. The next prime is 1213632713. The reversal of 1213632701 is 1072363121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1213632701 - 2¹⁰ = 1213631677 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 (1213632781) 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, 4777955 + ... + 4778208.

It is an arithmetic number, because the mean of its divisors is an integer number (305797248).

Almost surely, 2^1213632701 is an apocalyptic number.

It is an amenable number.

1213632701 is a deficient number, since it is larger than the sum of its proper divisors (9556291).

1213632701 is an equidigital number, since it uses as much as digits as its factorization.

1213632701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9556290.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1213632701 is about 34837.2315346670. The cubic root of 1213632701 is about 1066.6675664814.

Adding to 1213632701 its reverse (1072363121), we get a palindrome (2285995822).

The spelling of 1213632701 in words is "one billion, two hundred thirteen million, six hundred thirty-two thousand, seven hundred one".