1313220029 has 16 divisors (see below), whose sum is σ = 1582830720. Its totient is φ = 1074754560.

The previous prime is 1313220019. The next prime is 1313220067. The reversal of 1313220029 is 9200223131.

It is not a de Polignac number, because 1313220029 - 2²⁰ = 1312171453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313219986 and 1313220013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313220019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148364 + ... + 156965.

It is an arithmetic number, because the mean of its divisors is an integer number (98926920).

Almost surely, 2^1313220029 is an apocalyptic number.

It is an amenable number.

1313220029 is a deficient number, since it is larger than the sum of its proper divisors (269610691).

1313220029 is a wasteful number, since it uses less digits than its factorization.

1313220029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305380.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1313220029 is about 36238.3778472492. The cubic root of 1313220029 is about 1095.0799630241.

The spelling of 1313220029 in words is "one billion, three hundred thirteen million, two hundred twenty thousand, twenty-nine".