1081701391 has 2 divisors, whose sum is σ = 1081701392. Its totient is φ = 1081701390.

The previous prime is 1081701373. The next prime is 1081701437. The reversal of 1081701391 is 1931071801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1081701391 - 2¹⁷ = 1081570319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081701301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540850695 + 540850696.

It is an arithmetic number, because the mean of its divisors is an integer number (540850696).

Almost surely, 2^1081701391 is an apocalyptic number.

1081701391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081701391 is an equidigital number, since it uses as much as digits as its factorization.

1081701391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 31.

The square root of 1081701391 is about 32889.2291031578. The cubic root of 1081701391 is about 1026.5240515742.

It can be divided in two parts, 108170 and 1391, that added together give a square (109561 = 331²).

The spelling of 1081701391 in words is "one billion, eighty-one million, seven hundred one thousand, three hundred ninety-one".