1213430641 has 8 divisors (see below), whose sum is σ = 1285701984. Its totient is φ = 1141258560.

The previous prime is 1213430609. The next prime is 1213430653. The reversal of 1213430641 is 1460343121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213430641 - 2⁵ = 1213430609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213430341) 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, 1146 + ... + 49276.

It is an arithmetic number, because the mean of its divisors is an integer number (160712748).

Almost surely, 2^1213430641 is an apocalyptic number.

It is an amenable number.

1213430641 is a deficient number, since it is larger than the sum of its proper divisors (72271343).

1213430641 is a wasteful number, since it uses less digits than its factorization.

1213430641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49631.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1213430641 is about 34834.3313557186. The cubic root of 1213430641 is about 1066.6083660301.

Adding to 1213430641 its reverse (1460343121), we get a palindrome (2673773762).

The spelling of 1213430641 in words is "one billion, two hundred thirteen million, four hundred thirty thousand, six hundred forty-one".