151231040 has 28 divisors (see below), whose sum is σ = 360119676. Its totient is φ = 60492288.

The previous prime is 151231039. The next prime is 151231057. The reversal of 151231040 is 40132151.

It can be written as a sum of positive squares in 2 ways, for example, as 102900736 + 48330304 = 10144^2 + 6952^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235979 + ... + 236618.

It is an arithmetic number, because the mean of its divisors is an integer number (12861417).

Almost surely, 2^151231040 is an apocalyptic number.

151231040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151231040 is an abundant number, since it is smaller than the sum of its proper divisors (208888636).

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

151231040 is an equidigital number, since it uses as much as digits as its factorization.

151231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472614 (or 472604 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 151231040 is about 12297.6030184748. The cubic root of 151231040 is about 532.7788542922.

Adding to 151231040 its reverse (40132151), we get a palindrome (191363191).

The spelling of 151231040 in words is "one hundred fifty-one million, two hundred thirty-one thousand, forty".