1321631514 has 48 divisors (see below), whose sum is σ = 3277827072. Its totient is φ = 377007264.

The previous prime is 1321631503. The next prime is 1321631533. The reversal of 1321631514 is 4151361231.

It is a happy number.

1321631514 is a `hidden beast` number, since 1 + 3 + 21 + 631 + 5 + 1 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74247 + ... + 90309.

It is an arithmetic number, because the mean of its divisors is an integer number (68288064).

Almost surely, 2^1321631514 is an apocalyptic number.

1321631514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1321631514 is an abundant number, since it is smaller than the sum of its proper divisors (1956195558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321631514 is a wasteful number, since it uses less digits than its factorization.

1321631514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16731 (or 16728 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1321631514 is about 36354.2502879650. The cubic root of 1321631514 is about 1097.4130708109.

Adding to 1321631514 its reverse (4151361231), we get a palindrome (5472992745).

The spelling of 1321631514 in words is "one billion, three hundred twenty-one million, six hundred thirty-one thousand, five hundred fourteen".