1155311351 has 8 divisors (see below), whose sum is σ = 1173248880. Its totient is φ = 1137394368.

The previous prime is 1155311329. The next prime is 1155311357. The reversal of 1155311351 is 1531135511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155311351 - 2²² = 1151117047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155311351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155311357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139145 + ... + 147213.

It is an arithmetic number, because the mean of its divisors is an integer number (146656110).

Almost surely, 2^1155311351 is an apocalyptic number.

1155311351 is a deficient number, since it is larger than the sum of its proper divisors (17937529).

1155311351 is an equidigital number, since it uses as much as digits as its factorization.

1155311351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273.

The product of its digits is 1125, while the sum is 26.

The square root of 1155311351 is about 33989.8713001388. The cubic root of 1155311351 is about 1049.3000175118.

Adding to 1155311351 its reverse (1531135511), we get a palindrome (2686446862).

The spelling of 1155311351 in words is "one billion, one hundred fifty-five million, three hundred eleven thousand, three hundred fifty-one".