1151031540 has 48 divisors (see below), whose sum is σ = 3301502400. Its totient is φ = 299454720.

The previous prime is 1151031517. The next prime is 1151031569. The reversal of 1151031540 is 451301511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231490 + ... + 236409.

It is an arithmetic number, because the mean of its divisors is an integer number (68781300).

Almost surely, 2^1151031540 is an apocalyptic number.

1151031540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151031540 is an abundant number, since it is smaller than the sum of its proper divisors (2150470860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151031540 is a wasteful number, since it uses less digits than its factorization.

1151031540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467952 (or 467950 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1151031540 is about 33926.8557340641. The cubic root of 1151031540 is about 1048.0027156952.

The spelling of 1151031540 in words is "one billion, one hundred fifty-one million, thirty-one thousand, five hundred forty".