1223154013 has 8 divisors (see below), whose sum is σ = 1288555200. Its totient is φ = 1157855328.

The previous prime is 1223153999. The next prime is 1223154067. The reversal of 1223154013 is 3104513221.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223154013 is a prime.

It is a super-2 number, since 2×1223154013² = 2992211479036008338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223154313) 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, 481 + ... + 49462.

It is an arithmetic number, because the mean of its divisors is an integer number (161069400).

Almost surely, 2^1223154013 is an apocalyptic number.

It is an amenable number.

1223154013 is a deficient number, since it is larger than the sum of its proper divisors (65401187).

1223154013 is a wasteful number, since it uses less digits than its factorization.

1223154013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51251.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1223154013 is about 34973.6188147581. The cubic root of 1223154013 is about 1069.4497456090.

Adding to 1223154013 its reverse (3104513221), we get a palindrome (4327667234).

It can be divided in two parts, 1223 and 154013, that added together give a square (155236 = 394²).

The spelling of 1223154013 in words is "one billion, two hundred twenty-three million, one hundred fifty-four thousand, thirteen".