1156031 has 2 divisors, whose sum is σ = 1156032. Its totient is φ = 1156030.

The previous prime is 1156019. The next prime is 1156033. The reversal of 1156031 is 1306511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1156031 - 2⁶ = 1155967 is a prime.

It is a super-3 number, since 3×1156031³ = 4634786095742333373, which contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 1156033, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578015 + 578016.

It is an arithmetic number, because the mean of its divisors is an integer number (578016).

2^1156031 is an apocalyptic number.

1156031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156031 is an equidigital number, since it uses as much as digits as its factorization.

1156031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1156031 is about 1075.1888206264. The cubic root of 1156031 is about 104.9517843633.

The spelling of 1156031 in words is "one million, one hundred fifty-six thousand, thirty-one".