1310211389 has 2 divisors, whose sum is σ = 1310211390. Its totient is φ = 1310211388.

The previous prime is 1310211379. The next prime is 1310211421. The reversal of 1310211389 is 9831120131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872020900 + 438190489 = 29530^2 + 20933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310211389 - 2¹² = 1310207293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310211349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655105694 + 655105695.

It is an arithmetic number, because the mean of its divisors is an integer number (655105695).

Almost surely, 2^1310211389 is an apocalyptic number.

It is an amenable number.

1310211389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310211389 is an equidigital number, since it uses as much as digits as its factorization.

1310211389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1310211389 is about 36196.8422517766. The cubic root of 1310211389 is about 1094.2430327782.

The spelling of 1310211389 in words is "one billion, three hundred ten million, two hundred eleven thousand, three hundred eighty-nine".