1310223021 has 16 divisors (see below), whose sum is σ = 1795272000. Its totient is φ = 849356928.

The previous prime is 1310223011. The next prime is 1310223041. The reversal of 1310223021 is 1203220131.

It is not a de Polignac number, because 1310223021 - 2¹⁵ = 1310190253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310223001) 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, 279505 + ... + 284153.

It is an arithmetic number, because the mean of its divisors is an integer number (112204500).

Almost surely, 2^1310223021 is an apocalyptic number.

It is an amenable number.

1310223021 is a deficient number, since it is larger than the sum of its proper divisors (485048979).

1310223021 is a wasteful number, since it uses less digits than its factorization.

1310223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1310223021 is about 36197.0029284194. The cubic root of 1310223021 is about 1094.2462709828.

Adding to 1310223021 its reverse (1203220131), we get a palindrome (2513443152).

The spelling of 1310223021 in words is "one billion, three hundred ten million, two hundred twenty-three thousand, twenty-one".