1312306477 has 8 divisors (see below), whose sum is σ = 1355323392. Its totient is φ = 1269332400.

The previous prime is 1312306451. The next prime is 1312306493. The reversal of 1312306477 is 7746032131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312306477 - 2¹⁹ = 1311782189 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 (1312306777) 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, 58827 + ... + 78007.

It is an arithmetic number, because the mean of its divisors is an integer number (169415424).

Almost surely, 2^1312306477 is an apocalyptic number.

It is an amenable number.

1312306477 is a deficient number, since it is larger than the sum of its proper divisors (43016915).

1312306477 is a wasteful number, since it uses less digits than its factorization.

1312306477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21419.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 1312306477 is about 36225.7708958691. The cubic root of 1312306477 is about 1094.8259704106.

The spelling of 1312306477 in words is "one billion, three hundred twelve million, three hundred six thousand, four hundred seventy-seven".