1155418031 has 2 divisors, whose sum is σ = 1155418032. Its totient is φ = 1155418030.

The previous prime is 1155418027. The next prime is 1155418037. The reversal of 1155418031 is 1308145511.

It is a weak prime.

It is an emirp because it is prime and its reverse (1308145511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1155418031 - 2² = 1155418027 is a prime.

It is a super-2 number, since 2×1155418031² = 2669981652719833922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1155417985 and 1155418003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155418037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577709015 + 577709016.

It is an arithmetic number, because the mean of its divisors is an integer number (577709016).

Almost surely, 2^1155418031 is an apocalyptic number.

1155418031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155418031 is an equidigital number, since it uses as much as digits as its factorization.

1155418031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 1155418031 is about 33991.4405549397. The cubic root of 1155418031 is about 1049.3323135332.

The spelling of 1155418031 in words is "one billion, one hundred fifty-five million, four hundred eighteen thousand, thirty-one".