1307023057 has 4 divisors (see below), whose sum is σ = 1310042020. Its totient is φ = 1304004096.

The previous prime is 1307023021. The next prime is 1307023061. The reversal of 1307023057 is 7503207031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7503207031 = 4549 ⋅1649419.

It can be written as a sum of positive squares in 2 ways, for example, as 406062801 + 900960256 = 20151^2 + 30016^2 .

It is a cyclic number.

It is not a de Polignac number, because 1307023057 - 2¹⁹ = 1306498769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1307023007) 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, 1508832 + ... + 1509697.

It is an arithmetic number, because the mean of its divisors is an integer number (327510505).

Almost surely, 2^1307023057 is an apocalyptic number.

It is an amenable number.

1307023057 is a deficient number, since it is larger than the sum of its proper divisors (3018963).

1307023057 is an equidigital number, since it uses as much as digits as its factorization.

1307023057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018962.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 1307023057 is about 36152.7738493189. The cubic root of 1307023057 is about 1093.3547171255.

The spelling of 1307023057 in words is "one billion, three hundred seven million, twenty-three thousand, fifty-seven".