1257230318 has 16 divisors (see below), whose sum is σ = 1903651200. Its totient is φ = 622697400.

The previous prime is 1257230311. The next prime is 1257230339. The reversal of 1257230318 is 8130327521.

It is a super-2 number, since 2×1257230318² = 3161256144996762248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257230311) 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, 152933 + ... + 160943.

It is an arithmetic number, because the mean of its divisors is an integer number (118978200).

Almost surely, 2^1257230318 is an apocalyptic number.

1257230318 is a deficient number, since it is larger than the sum of its proper divisors (646420882).

1257230318 is a wasteful number, since it uses less digits than its factorization.

1257230318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1257230318 is about 35457.4437600908. The cubic root of 1257230318 is about 1079.2903196570.

Adding to 1257230318 its reverse (8130327521), we get a palindrome (9387557839).

The spelling of 1257230318 in words is "one billion, two hundred fifty-seven million, two hundred thirty thousand, three hundred eighteen".