1456021313 has 4 divisors (see below), whose sum is σ = 1471031940. Its totient is φ = 1441010688.

The previous prime is 1456021309. The next prime is 1456021327. The reversal of 1456021313 is 3131206541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 753612304 + 702409009 = 27452^2 + 26503^2 .

It is a cyclic number.

It is not a de Polignac number, because 1456021313 - 2² = 1456021309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1456021363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7505168 + ... + 7505361.

It is an arithmetic number, because the mean of its divisors is an integer number (367757985).

Almost surely, 2^1456021313 is an apocalyptic number.

It is an amenable number.

1456021313 is a deficient number, since it is larger than the sum of its proper divisors (15010627).

1456021313 is an equidigital number, since it uses as much as digits as its factorization.

1456021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15010626.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1456021313 is about 38157.8473318399. The cubic root of 1456021313 is about 1133.4157518974.

Adding to 1456021313 its reverse (3131206541), we get a palindrome (4587227854).

The spelling of 1456021313 in words is "one billion, four hundred fifty-six million, twenty-one thousand, three hundred thirteen".