1376252321 has 2 divisors, whose sum is σ = 1376252322. Its totient is φ = 1376252320.

The previous prime is 1376252309. The next prime is 1376252329. The reversal of 1376252321 is 1232526731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1373740096 + 2512225 = 37064^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376252321 - 2²⁶ = 1309143457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1376252329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688126160 + 688126161.

It is an arithmetic number, because the mean of its divisors is an integer number (688126161).

Almost surely, 2^1376252321 is an apocalyptic number.

It is an amenable number.

1376252321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376252321 is an equidigital number, since it uses as much as digits as its factorization.

1376252321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 1376252321 is about 37097.8748852276. The cubic root of 1376252321 is about 1112.3275352059.

The spelling of 1376252321 in words is "one billion, three hundred seventy-six million, two hundred fifty-two thousand, three hundred twenty-one".