1231320514 has 4 divisors (see below), whose sum is σ = 1846980774. Its totient is φ = 615660256.

The previous prime is 1231320491. The next prime is 1231320551. The reversal of 1231320514 is 4150231321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4150231321 = 83 ⋅50002787.

It can be written as a sum of positive squares in only one way, i.e., 1226190289 + 5130225 = 35017^2 + 2265^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307830127 + ... + 307830130.

Almost surely, 2^1231320514 is an apocalyptic number.

1231320514 is a deficient number, since it is larger than the sum of its proper divisors (615660260).

1231320514 is an equidigital number, since it uses as much as digits as its factorization.

1231320514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615660259.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1231320514 is about 35090.1768875564. The cubic root of 1231320514 is about 1071.8245616082.

Adding to 1231320514 its reverse (4150231321), we get a palindrome (5381551835).

The spelling of 1231320514 in words is "one billion, two hundred thirty-one million, three hundred twenty thousand, five hundred fourteen".