713121391 has 2 divisors, whose sum is σ = 713121392. Its totient is φ = 713121390.

The previous prime is 713121349. The next prime is 713121403. The reversal of 713121391 is 193121317.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 713121391 - 2²¹ = 711024239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (713121341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356560695 + 356560696.

It is an arithmetic number, because the mean of its divisors is an integer number (356560696).

Almost surely, 2^713121391 is an apocalyptic number.

713121391 is a deficient number, since it is larger than the sum of its proper divisors (1).

713121391 is an equidigital number, since it uses as much as digits as its factorization.

713121391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

The square root of 713121391 is about 26704.3328132346. The cubic root of 713121391 is about 893.4175676895.

The spelling of 713121391 in words is "seven hundred thirteen million, one hundred twenty-one thousand, three hundred ninety-one".