1314131021 has 4 divisors (see below), whose sum is σ = 1501864032. Its totient is φ = 1126398012.

The previous prime is 1314130973. The next prime is 1314131033. The reversal of 1314131021 is 1201314131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1314131021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1314131051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93866495 + ... + 93866508.

It is an arithmetic number, because the mean of its divisors is an integer number (375466008).

Almost surely, 2^1314131021 is an apocalyptic number.

It is an amenable number.

1314131021 is a deficient number, since it is larger than the sum of its proper divisors (187733011).

1314131021 is an equidigital number, since it uses as much as digits as its factorization.

1314131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187733010.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1314131021 is about 36250.9451049211. The cubic root of 1314131021 is about 1095.3331266142. Note that the first 3 decimals are identical.

Adding to 1314131021 its reverse (1201314131), we get a palindrome (2515445152).

The spelling of 1314131021 in words is "one billion, three hundred fourteen million, one hundred thirty-one thousand, twenty-one".