1213013541 has 8 divisors (see below), whose sum is σ = 1618170880. Its totient is φ = 808265952.

The previous prime is 1213013533. The next prime is 1213013573. The reversal of 1213013541 is 1453103121.

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

It is not a de Polignac number, because 1213013541 - 2³ = 1213013533 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 (1213013141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95461 + ... + 107418.

It is an arithmetic number, because the mean of its divisors is an integer number (202271360).

Almost surely, 2^1213013541 is an apocalyptic number.

It is an amenable number.

1213013541 is a deficient number, since it is larger than the sum of its proper divisors (405157339).

1213013541 is a wasteful number, since it uses less digits than its factorization.

1213013541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204875.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1213013541 is about 34828.3439313442. The cubic root of 1213013541 is about 1066.4861414001.

Adding to 1213013541 its reverse (1453103121), we get a palindrome (2666116662).

The spelling of 1213013541 in words is "one billion, two hundred thirteen million, thirteen thousand, five hundred forty-one".