1171257331 has 2 divisors, whose sum is σ = 1171257332. Its totient is φ = 1171257330.

The previous prime is 1171257281. The next prime is 1171257361. The reversal of 1171257331 is 1337521711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1171257331 - 2¹³ = 1171249139 is a prime.

It is a super-2 number, since 2×1171257331² = 2743687470842487122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1171257293 and 1171257302.

It is not a weakly prime, because it can be changed into another prime (1171257361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585628665 + 585628666.

It is an arithmetic number, because the mean of its divisors is an integer number (585628666).

Almost surely, 2^1171257331 is an apocalyptic number.

1171257331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171257331 is an equidigital number, since it uses as much as digits as its factorization.

1171257331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410, while the sum is 31.

The square root of 1171257331 is about 34223.6370218012. The cubic root of 1171257331 is about 1054.1055680656.

The spelling of 1171257331 in words is "one billion, one hundred seventy-one million, two hundred fifty-seven thousand, three hundred thirty-one".