1310211857 has 2 divisors, whose sum is σ = 1310211858. Its totient is φ = 1310211856.

The previous prime is 1310211841. The next prime is 1310211871. The reversal of 1310211857 is 7581120131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1207979536 + 102232321 = 34756^2 + 10111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310211857 - 2⁴ = 1310211841 is a prime.

It is a super-2 number, since 2×1310211857² = 3433310220446776898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310211817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655105928 + 655105929.

It is an arithmetic number, because the mean of its divisors is an integer number (655105929).

Almost surely, 2^1310211857 is an apocalyptic number.

It is an amenable number.

1310211857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310211857 is an equidigital number, since it uses as much as digits as its factorization.

1310211857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1310211857 is about 36196.8487164283. The cubic root of 1310211857 is about 1094.2431630640.

Adding to 1310211857 its reverse (7581120131), we get a palindrome (8891331988).

The spelling of 1310211857 in words is "one billion, three hundred ten million, two hundred eleven thousand, eight hundred fifty-seven".