1151021313 has 48 divisors (see below), whose sum is σ = 1857464640. Its totient is φ = 704111616.

The previous prime is 1151021293. The next prime is 1151021317. The reversal of 1151021313 is 3131201511.

It is not a de Polignac number, because 1151021313 - 2²² = 1146827009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1151021317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 880006 + ... + 881312.

It is an arithmetic number, because the mean of its divisors is an integer number (38697180).

Almost surely, 2^1151021313 is an apocalyptic number.

1151021313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1151021313 is a deficient number, since it is larger than the sum of its proper divisors (706443327).

1151021313 is a wasteful number, since it uses less digits than its factorization.

1151021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1151021313 is about 33926.7050124235. The cubic root of 1151021313 is about 1047.9996118256. Note that the first 3 decimals are identical.

Adding to 1151021313 its reverse (3131201511), we get a palindrome (4282222824).

It can be divided in two parts, 11510 and 21313, that added together give a palindrome (32823).

The spelling of 1151021313 in words is "one billion, one hundred fifty-one million, twenty-one thousand, three hundred thirteen".