1166228131 has 2 divisors, whose sum is σ = 1166228132. Its totient is φ = 1166228130.

The previous prime is 1166228093. The next prime is 1166228137. The reversal of 1166228131 is 1318226611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166228131 - 2²³ = 1157839523 is a prime.

It is a super-2 number, since 2×1166228131² = 2720176107071506322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166228093 and 1166228102.

It is not a weakly prime, because it can be changed into another prime (1166228137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583114065 + 583114066.

It is an arithmetic number, because the mean of its divisors is an integer number (583114066).

Almost surely, 2^1166228131 is an apocalyptic number.

1166228131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166228131 is an equidigital number, since it uses as much as digits as its factorization.

1166228131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 1166228131 is about 34150.0824449956. The cubic root of 1166228131 is about 1052.5946807474.

It can be divided in two parts, 11662 and 28131, that added together give a palindrome (39793).

The spelling of 1166228131 in words is "one billion, one hundred sixty-six million, two hundred twenty-eight thousand, one hundred thirty-one".