1312034021 has 8 divisors (see below), whose sum is σ = 1320455520. Its totient is φ = 1303625008.

The previous prime is 1312033993. The next prime is 1312034039. The reversal of 1312034021 is 1204302131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312034021 is a prime.

It is a super-2 number, since 2×1312034021² = 3442866544522856882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312034051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296195 + ... + 300591.

It is an arithmetic number, because the mean of its divisors is an integer number (165056940).

Almost surely, 2^1312034021 is an apocalyptic number.

It is an amenable number.

1312034021 is a deficient number, since it is larger than the sum of its proper divisors (8421499).

1312034021 is a wasteful number, since it uses less digits than its factorization.

1312034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1312034021 is about 36222.0101733739. The cubic root of 1312034021 is about 1094.7501973206.

Adding to 1312034021 its reverse (1204302131), we get a palindrome (2516336152).

The spelling of 1312034021 in words is "one billion, three hundred twelve million, thirty-four thousand, twenty-one".