1311564214 has 4 divisors (see below), whose sum is σ = 1967346324. Its totient is φ = 655782106.

The previous prime is 1311564193. The next prime is 1311564239. The reversal of 1311564214 is 4124651131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4124651131 = 15289 ⋅269779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327891052 + ... + 327891055.

It is an arithmetic number, because the mean of its divisors is an integer number (491836581).

Almost surely, 2^1311564214 is an apocalyptic number.

1311564214 is a deficient number, since it is larger than the sum of its proper divisors (655782110).

1311564214 is an equidigital number, since it uses as much as digits as its factorization.

1311564214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655782109.

The product of its digits is 2880, while the sum is 28.

The square root of 1311564214 is about 36215.5244888156. The cubic root of 1311564214 is about 1094.6195140460.

The spelling of 1311564214 in words is "one billion, three hundred eleven million, five hundred sixty-four thousand, two hundred fourteen".