1151240311 has 8 divisors (see below), whose sum is σ = 1273305824. Its totient is φ = 1033961760.

The previous prime is 1151240309. The next prime is 1151240417. The reversal of 1151240311 is 1130421511.

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

It is not a de Polignac number, because 1151240311 - 2¹ = 1151240309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151240011) 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, 1196235 + ... + 1197196.

It is an arithmetic number, because the mean of its divisors is an integer number (159163228).

Almost surely, 2^1151240311 is an apocalyptic number.

1151240311 is a deficient number, since it is larger than the sum of its proper divisors (122065513).

1151240311 is a wasteful number, since it uses less digits than its factorization.

1151240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393481.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1151240311 is about 33929.9323754115. The cubic root of 1151240311 is about 1048.0660731680.

Adding to 1151240311 its reverse (1130421511), we get a palindrome (2281661822).

The spelling of 1151240311 in words is "one billion, one hundred fifty-one million, two hundred forty thousand, three hundred eleven".