1312203379 has 2 divisors, whose sum is σ = 1312203380. Its totient is φ = 1312203378.

The previous prime is 1312203353. The next prime is 1312203419. The reversal of 1312203379 is 9733022131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312203379 - 2¹⁵ = 1312170611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312203379.

It is not a weakly prime, because it can be changed into another prime (1312203329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656101689 + 656101690.

It is an arithmetic number, because the mean of its divisors is an integer number (656101690).

Almost surely, 2^1312203379 is an apocalyptic number.

1312203379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312203379 is an equidigital number, since it uses as much as digits as its factorization.

1312203379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 1312203379 is about 36224.3478754277. The cubic root of 1312203379 is about 1094.7972989263.

The spelling of 1312203379 in words is "one billion, three hundred twelve million, two hundred three thousand, three hundred seventy-nine".